From 77c5d95dd4b6fd989fb998b38850328983c141e0 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Mon, 10 Feb 2020 09:50:05 -0800
Subject: [PATCH 01/12] Add two new scope handling methods to
 platform_interface.

---
 .../lib/google_sign_in_platform_interface.dart   | 10 ++++++++++
 .../lib/src/method_channel_google_sign_in.dart   | 16 ++++++++++++++++
 .../test/method_channel_google_sign_in_test.dart |  8 ++++++++
 3 files changed, 34 insertions(+)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index 01230150c1d0..bc323c32b2a4 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -121,4 +121,14 @@ abstract class GoogleSignInPlatform {
   Future<void> clearAuthCache({@required String token}) async {
     throw UnimplementedError('clearAuthCache() has not been implemented.');
   }
+
+  /// Indicates whether this Oauth [scope] has been granted.
+  Future<bool> hasGrantedScope(String scope) async {
+    throw UnimplementedError('hasGrantedScope() has not been implmented.');
+  }
+
+  /// Requests the user grant an additional Oauth [scope].
+  Future<bool> requestScope(String scope) async {
+    throw UnimplementedError('requestScope() has not been implmented.');
+  }
 }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 1d1eb64edd92..59ab34b837a0 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -78,4 +78,20 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
       <String, String>{'token': token},
     );
   }
+
+  @override
+  Future<bool> hasGrantedScope(String scope) {
+    return channel.invokeMethod<bool>(
+      'hasGrantedScope', 
+      <String, String>{'scope': scope},
+    );
+  }
+
+  @override
+  Future<bool> requestScope(String scope) {
+    return channel.invokeMethod<bool>(
+      'requestScope', 
+      <String, String>{'scope': scope},
+    );
+  }
 }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index 13de6acf0748..bd6e22429400 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -114,6 +114,14 @@ void main() {
         }: isMethodCall('clearAuthCache', arguments: <String, dynamic>{
           'token': 'abc',
         }),
+        () {
+          googleSignIn.hasGrantedScope('grantedScope');
+        }: isMethodCall('hasGrantedScope',
+            arguments: <String, dynamic>{'scope': 'grantedScope'}),
+        () {
+          googleSignIn.requestScope('newScope');
+        }: isMethodCall('requestScope',
+            arguments: <String, dynamic>{'scope': 'newScope'}),
         googleSignIn.signOut: isMethodCall('signOut', arguments: null),
         googleSignIn.disconnect: isMethodCall('disconnect', arguments: null),
         googleSignIn.isSignedIn: isMethodCall('isSignedIn', arguments: null),

From 4d20016f7ec9b4f445a8e0407db8dee1e4e654e9 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Mon, 10 Feb 2020 10:03:29 -0800
Subject: [PATCH 02/12] Update changelog and version for
 google_sign_in_platform_interface.

---
 .../google_sign_in_platform_interface/CHANGELOG.md           | 5 +++++
 .../google_sign_in_platform_interface/pubspec.yaml           | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/CHANGELOG.md b/packages/google_sign_in/google_sign_in_platform_interface/CHANGELOG.md
index 7819e747ecd4..c0627df8c1da 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/CHANGELOG.md
+++ b/packages/google_sign_in/google_sign_in_platform_interface/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.1.0
+
+* Add hasRequestedScope method to determine if an Oauth scope has been granted.
+* Add requestScope Method to request new Oauth scopes be granted by the user.
+
 ## 1.0.4
 
 * Make the pedantic dev_dependency explicit.
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml b/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
index 23937e2511ef..84fda1cf500d 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
@@ -3,7 +3,8 @@ description: A common platform interface for the google_sign_in plugin.
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_sign_in/google_sign_in_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 1.0.4
+version: 1.1.0
+
 
 dependencies:
   flutter:

From 00fbc7e246d6471824a1e79de8a6fc7eccb8f5c9 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Mon, 10 Feb 2020 10:07:43 -0800
Subject: [PATCH 03/12] Make test formatting consistent.

---
 .../test/method_channel_google_sign_in_test.dart       | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index bd6e22429400..cf51cd3a1735 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -116,12 +116,14 @@ void main() {
         }),
         () {
           googleSignIn.hasGrantedScope('grantedScope');
-        }: isMethodCall('hasGrantedScope',
-            arguments: <String, dynamic>{'scope': 'grantedScope'}),
+        }: isMethodCall('hasGrantedScope', arguments: <String, dynamic>{
+          'scope': 'grantedScope',
+        }),
         () {
           googleSignIn.requestScope('newScope');
-        }: isMethodCall('requestScope',
-            arguments: <String, dynamic>{'scope': 'newScope'}),
+        }: isMethodCall('requestScope', arguments: <String, dynamic>{
+          'scope': 'newScope',
+        }),
         googleSignIn.signOut: isMethodCall('signOut', arguments: null),
         googleSignIn.disconnect: isMethodCall('disconnect', arguments: null),
         googleSignIn.isSignedIn: isMethodCall('isSignedIn', arguments: null),

From 43407b109deeeda0db63d164a77c5e489863f9b5 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Fri, 21 Feb 2020 10:34:26 -0800
Subject: [PATCH 04/12] Fix formatting.

---
 .../lib/src/method_channel_google_sign_in.dart                | 4 ++--
 .../google_sign_in_platform_interface/pubspec.yaml            | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 59ab34b837a0..24cee6ace481 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -82,7 +82,7 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
   @override
   Future<bool> hasGrantedScope(String scope) {
     return channel.invokeMethod<bool>(
-      'hasGrantedScope', 
+      'hasGrantedScope',
       <String, String>{'scope': scope},
     );
   }
@@ -90,7 +90,7 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
   @override
   Future<bool> requestScope(String scope) {
     return channel.invokeMethod<bool>(
-      'requestScope', 
+      'requestScope',
       <String, String>{'scope': scope},
     );
   }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml b/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
index 84fda1cf500d..d1f7abc291c4 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
@@ -5,7 +5,6 @@ homepage: https://github.com/flutter/plugins/tree/master/packages/google_sign_in
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
 version: 1.1.0
 
-
 dependencies:
   flutter:
     sdk: flutter

From cd919c2da3f1a528b57d59c478c767843cc5b808 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Thu, 27 Feb 2020 12:52:52 -0800
Subject: [PATCH 05/12] Convert reqeustScope to allow multiple scopes requested
 at once.

---
 .../lib/google_sign_in_platform_interface.dart                | 4 ++--
 .../lib/src/method_channel_google_sign_in.dart                | 4 ++--
 .../test/method_channel_google_sign_in_test.dart              | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index bc323c32b2a4..1dcf00a4c16e 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -128,7 +128,7 @@ abstract class GoogleSignInPlatform {
   }
 
   /// Requests the user grant an additional Oauth [scope].
-  Future<bool> requestScope(String scope) async {
-    throw UnimplementedError('requestScope() has not been implmented.');
+  Future<bool> requestScopes(List<String> scopes) async {
+    throw UnimplementedError('requestScopes() has not been implmented.');
   }
 }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 24cee6ace481..1b247cd19ab1 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -88,10 +88,10 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
   }
 
   @override
-  Future<bool> requestScope(String scope) {
+  Future<bool> requestScopes(List<String> scopes) {
     return channel.invokeMethod<bool>(
       'requestScope',
-      <String, String>{'scope': scope},
+      <String, List<String>>{'scope': scopes},
     );
   }
 }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index cf51cd3a1735..d4c18de24500 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -120,9 +120,9 @@ void main() {
           'scope': 'grantedScope',
         }),
         () {
-          googleSignIn.requestScope('newScope');
+          googleSignIn.requestScopes(['newScope', 'anotherScope']);
         }: isMethodCall('requestScope', arguments: <String, dynamic>{
-          'scope': 'newScope',
+          'scope': ['newScope', 'anotherScope'],
         }),
         googleSignIn.signOut: isMethodCall('signOut', arguments: null),
         googleSignIn.disconnect: isMethodCall('disconnect', arguments: null),

From e9af63f1a2d60596f6ff6df8cd30a2396891e77f Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Fri, 28 Feb 2020 08:34:40 -0800
Subject: [PATCH 06/12] Allow multiple scope grants to be checked at once.

---
 .../lib/google_sign_in_platform_interface.dart            | 4 ++--
 .../lib/src/method_channel_google_sign_in.dart            | 8 ++++----
 .../test/method_channel_google_sign_in_test.dart          | 6 +++---
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index 1dcf00a4c16e..33abdf7d9f70 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -122,8 +122,8 @@ abstract class GoogleSignInPlatform {
     throw UnimplementedError('clearAuthCache() has not been implemented.');
   }
 
-  /// Indicates whether this Oauth [scope] has been granted.
-  Future<bool> hasGrantedScope(String scope) async {
+  /// Checks to see if [scopes] have been granted, returns those which have not.
+  Future<List<String>> listMissingScopes(List<String> scopes) async {
     throw UnimplementedError('hasGrantedScope() has not been implmented.');
   }
 
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 1b247cd19ab1..25f773abf968 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -80,10 +80,10 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
   }
 
   @override
-  Future<bool> hasGrantedScope(String scope) {
-    return channel.invokeMethod<bool>(
-      'hasGrantedScope',
-      <String, String>{'scope': scope},
+  Future<List<String>> listMissingScopes(List<String> scopes) {
+    return channel.invokeMethod<List<String>>(
+      'listMissingScopes',
+      <String, List<String>>{'scopes': scopes},
     );
   }
 
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index d4c18de24500..16f3eb17159a 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -115,9 +115,9 @@ void main() {
           'token': 'abc',
         }),
         () {
-          googleSignIn.hasGrantedScope('grantedScope');
-        }: isMethodCall('hasGrantedScope', arguments: <String, dynamic>{
-          'scope': 'grantedScope',
+          googleSignIn.listMissingScopes(['grantedScope']);
+        }: isMethodCall('listMissingScopes', arguments: <String, dynamic>{
+          'scopes': ['grantedScope'],
         }),
         () {
           googleSignIn.requestScopes(['newScope', 'anotherScope']);

From a3b635a7ca43f924cb6c61b3bc9565914c95062c Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Fri, 28 Feb 2020 08:41:11 -0800
Subject: [PATCH 07/12] Make pluralization of 'scopes' consistent.

---
 .../lib/google_sign_in_platform_interface.dart                | 2 +-
 .../lib/src/method_channel_google_sign_in.dart                | 4 ++--
 .../test/method_channel_google_sign_in_test.dart              | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index 33abdf7d9f70..1649a269ddb1 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -124,7 +124,7 @@ abstract class GoogleSignInPlatform {
 
   /// Checks to see if [scopes] have been granted, returns those which have not.
   Future<List<String>> listMissingScopes(List<String> scopes) async {
-    throw UnimplementedError('hasGrantedScope() has not been implmented.');
+    throw UnimplementedError('listMissingScopes() has not been implmented.');
   }
 
   /// Requests the user grant an additional Oauth [scope].
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 25f773abf968..6a6c7f59f18b 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -90,8 +90,8 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
   @override
   Future<bool> requestScopes(List<String> scopes) {
     return channel.invokeMethod<bool>(
-      'requestScope',
-      <String, List<String>>{'scope': scopes},
+      'requestScopes',
+      <String, List<String>>{'scopes': scopes},
     );
   }
 }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index 16f3eb17159a..1a2973d7b625 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -121,8 +121,8 @@ void main() {
         }),
         () {
           googleSignIn.requestScopes(['newScope', 'anotherScope']);
-        }: isMethodCall('requestScope', arguments: <String, dynamic>{
-          'scope': ['newScope', 'anotherScope'],
+        }: isMethodCall('requestScopes', arguments: <String, dynamic>{
+          'scopes': ['newScope', 'anotherScope'],
         }),
         googleSignIn.signOut: isMethodCall('signOut', arguments: null),
         googleSignIn.disconnect: isMethodCall('disconnect', arguments: null),

From f8b462888db4400ec769bd7907cb30d7d8510ef3 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Fri, 28 Feb 2020 11:40:13 -0800
Subject: [PATCH 08/12] Receive result as List<dynamic> before converting to
 List<String>.

---
 .../lib/src/method_channel_google_sign_in.dart                | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 6a6c7f59f18b..94242525cc18 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -81,10 +81,10 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
 
   @override
   Future<List<String>> listMissingScopes(List<String> scopes) {
-    return channel.invokeMethod<List<String>>(
+    return channel.invokeMethod<List<dynamic>>(
       'listMissingScopes',
       <String, List<String>>{'scopes': scopes},
-    );
+    ).then((result) => List<String>.from(result));
   }
 
   @override

From 379a9200c2a3c3ca7c3ab15cd945f03c1619e797 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Fri, 28 Feb 2020 11:50:50 -0800
Subject: [PATCH 09/12] Handle null result for missing scopes.

---
 .../lib/src/method_channel_google_sign_in.dart                  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 94242525cc18..24e376e505ef 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -84,7 +84,7 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
     return channel.invokeMethod<List<dynamic>>(
       'listMissingScopes',
       <String, List<String>>{'scopes': scopes},
-    ).then((result) => List<String>.from(result));
+    ).then((result) => result != null ? List<String>.from(result) : null);
   }
 
   @override

From f37f53d93d23bea1b13ee353dec892dc4391649c Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Fri, 28 Feb 2020 12:31:23 -0800
Subject: [PATCH 10/12] Remove listMissingScopes.

---
 .../lib/google_sign_in_platform_interface.dart            | 7 +------
 .../lib/src/method_channel_google_sign_in.dart            | 8 --------
 .../test/method_channel_google_sign_in_test.dart          | 5 -----
 3 files changed, 1 insertion(+), 19 deletions(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index 1649a269ddb1..ae21cfcace5c 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -122,12 +122,7 @@ abstract class GoogleSignInPlatform {
     throw UnimplementedError('clearAuthCache() has not been implemented.');
   }
 
-  /// Checks to see if [scopes] have been granted, returns those which have not.
-  Future<List<String>> listMissingScopes(List<String> scopes) async {
-    throw UnimplementedError('listMissingScopes() has not been implmented.');
-  }
-
-  /// Requests the user grant an additional Oauth [scope].
+  /// Requests the user grants additional Oauth [scopes].
   Future<bool> requestScopes(List<String> scopes) async {
     throw UnimplementedError('requestScopes() has not been implmented.');
   }
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
index 24e376e505ef..4d2a34fe0fe7 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/src/method_channel_google_sign_in.dart
@@ -79,14 +79,6 @@ class MethodChannelGoogleSignIn extends GoogleSignInPlatform {
     );
   }
 
-  @override
-  Future<List<String>> listMissingScopes(List<String> scopes) {
-    return channel.invokeMethod<List<dynamic>>(
-      'listMissingScopes',
-      <String, List<String>>{'scopes': scopes},
-    ).then((result) => result != null ? List<String>.from(result) : null);
-  }
-
   @override
   Future<bool> requestScopes(List<String> scopes) {
     return channel.invokeMethod<bool>(
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
index 1a2973d7b625..6a8f73736004 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/test/method_channel_google_sign_in_test.dart
@@ -114,11 +114,6 @@ void main() {
         }: isMethodCall('clearAuthCache', arguments: <String, dynamic>{
           'token': 'abc',
         }),
-        () {
-          googleSignIn.listMissingScopes(['grantedScope']);
-        }: isMethodCall('listMissingScopes', arguments: <String, dynamic>{
-          'scopes': ['grantedScope'],
-        }),
         () {
           googleSignIn.requestScopes(['newScope', 'anotherScope']);
         }: isMethodCall('requestScopes', arguments: <String, dynamic>{

From a01fac40f30c49854cf69fa39e36abae50bebcd2 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Wed, 4 Mar 2020 16:32:11 -0800
Subject: [PATCH 11/12] Add link to scope list in dartdoc.

---
 .../lib/google_sign_in_platform_interface.dart                 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index ae21cfcace5c..674f0e3fefa8 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -123,6 +123,9 @@ abstract class GoogleSignInPlatform {
   }
 
   /// Requests the user grants additional Oauth [scopes].
+  /// 
+  /// Scopes should come from the full  list
+  /// [here](https://developers.google.com/identity/protocols/googlescopes).
   Future<bool> requestScopes(List<String> scopes) async {
     throw UnimplementedError('requestScopes() has not been implmented.');
   }

From 02fdaa74df05905f9c902ce1024de81ee5f9acc0 Mon Sep 17 00:00:00 2001
From: Conner Kasten <ckasten@google.com>
Date: Wed, 4 Mar 2020 16:37:35 -0800
Subject: [PATCH 12/12] Fix dartdoc formatting.

---
 .../lib/google_sign_in_platform_interface.dart                  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
index 674f0e3fefa8..966e93551086 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
+++ b/packages/google_sign_in/google_sign_in_platform_interface/lib/google_sign_in_platform_interface.dart
@@ -123,7 +123,7 @@ abstract class GoogleSignInPlatform {
   }
 
   /// Requests the user grants additional Oauth [scopes].
-  /// 
+  ///
   /// Scopes should come from the full  list
   /// [here](https://developers.google.com/identity/protocols/googlescopes).
   Future<bool> requestScopes(List<String> scopes) async {