make EmbeddedViewParams a unique ptr

flow/embedded_views.h

@@ -190,8 +190,9 @@ class ExternalViewEmbedder {
   virtual std::vector<SkCanvas*> GetCurrentCanvases() = 0;
 
   // Must be called on the UI thread.
-  virtual SkCanvas* CompositeEmbeddedView(int view_id,
-                                          const EmbeddedViewParams& params) = 0;
+  virtual SkCanvas* CompositeEmbeddedView(
+      int view_id,
+      std::unique_ptr<flutter::EmbeddedViewParams> params) = 0;
 
   virtual bool SubmitFrame(GrContext* context);
 

flow/layers/platform_view_layer.cc

@@ -32,15 +32,16 @@ void PlatformViewLayer::Paint(PaintContext& context) const {
                       "does not support embedding";
     return;
   }
-  EmbeddedViewParams params;
+  std::unique_ptr<EmbeddedViewParams> params =
+      std::make_unique<EmbeddedViewParams>();
   SkMatrix transform = context.leaf_nodes_canvas->getTotalMatrix();
-  params.offsetPixels =
+  params->offsetPixels =
       SkPoint::Make(transform.getTranslateX(), transform.getTranslateY());
-  params.sizePoints = size_;
-  params.mutatorsStack = context.mutators_stack;
+  params->sizePoints = size_;
+  params->mutatorsStack = context.mutators_stack;
 
   SkCanvas* canvas =
-      context.view_embedder->CompositeEmbeddedView(view_id_, params);
+      context.view_embedder->CompositeEmbeddedView(view_id_, std::move(params));
   context.leaf_nodes_canvas = canvas;
 }
 }  // namespace flutter

shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm

@@ -231,7 +231,6 @@
 void FlutterPlatformViewsController::ApplyMutators(const MutatorsStack& mutators_stack,
                                                    UIView* embedded_view) {
   FML_DCHECK(CATransform3DEqualToTransform(embedded_view.layer.transform, CATransform3DIdentity));
-
   UIView* head = embedded_view;
   head.clipsToBounds = YES;
   ResetAnchor(head.layer);
@@ -275,13 +274,13 @@
 
 void FlutterPlatformViewsController::CompositeWithParams(
     int view_id,
-    const flutter::EmbeddedViewParams& params) {
-  CGRect frame = CGRectMake(0, 0, params.sizePoints.width(), params.sizePoints.height());
+    std::unique_ptr<flutter::EmbeddedViewParams> params) {
+  CGRect frame = CGRectMake(0, 0, params->sizePoints.width(), params->sizePoints.height());
   UIView* touchInterceptor = touch_interceptors_[view_id].get();
   touchInterceptor.layer.transform = CATransform3DIdentity;
   touchInterceptor.frame = frame;
 
-  int currentClippingCount = CountClips(params.mutatorsStack);
+  int currentClippingCount = CountClips(params->mutatorsStack);
   int previousClippingCount = clip_count_[view_id];
   if (currentClippingCount != previousClippingCount) {
     clip_count_[view_id] = currentClippingCount;
@@ -292,22 +291,22 @@
         ReconstructClipViewsChain(currentClippingCount, touchInterceptor, oldPlatformViewRoot);
     root_views_[view_id] = fml::scoped_nsobject<UIView>([newPlatformViewRoot retain]);
   }
-  ApplyMutators(params.mutatorsStack, touchInterceptor);
+  ApplyMutators(params->mutatorsStack, touchInterceptor);
 }
 
 SkCanvas* FlutterPlatformViewsController::CompositeEmbeddedView(
     int view_id,
-    const flutter::EmbeddedViewParams& params) {
+    std::unique_ptr<flutter::EmbeddedViewParams> params) {
   // TODO(amirh): assert that this is running on the platform thread once we support the iOS
   // embedded views thread configuration.
 
   // Do nothing if the params didn't change.
   if (current_composition_params_.count(view_id) == 1 &&
-      current_composition_params_[view_id] == params) {
+      current_composition_params_[view_id] == *params.get()) {
     return picture_recorders_[view_id]->getRecordingCanvas();
   }
-  current_composition_params_[view_id] = EmbeddedViewParams(params);
-  CompositeWithParams(view_id, params);
+  current_composition_params_[view_id] = EmbeddedViewParams(*params.get());
+  CompositeWithParams(view_id, std::move(params));
 
   return picture_recorders_[view_id]->getRecordingCanvas();
 }

shell/platform/darwin/ios/framework/Source/FlutterPlatformViews_Internal.h

@@ -90,7 +90,7 @@ class FlutterPlatformViewsController {
 
   std::vector<SkCanvas*> GetCurrentCanvases();
 
-  SkCanvas* CompositeEmbeddedView(int view_id, const flutter::EmbeddedViewParams& params);
+  SkCanvas* CompositeEmbeddedView(int view_id, std::unique_ptr<flutter::EmbeddedViewParams> params);
 
   // Discards all platform views instances and auxiliary resources.
   void Reset();
@@ -184,7 +184,7 @@ class FlutterPlatformViewsController {
   //
   // After each clip operation, we update the head to the super view of the current head.
   void ApplyMutators(const MutatorsStack& mutators_stack, UIView* embedded_view);
-  void CompositeWithParams(int view_id, const flutter::EmbeddedViewParams& params);
+  void CompositeWithParams(int view_id, std::unique_ptr<flutter::EmbeddedViewParams> params);
 
   FML_DISALLOW_COPY_AND_ASSIGN(FlutterPlatformViewsController);
 };

shell/platform/darwin/ios/ios_surface_gl.h

@@ -61,7 +61,8 @@ class IOSSurfaceGL final : public IOSSurface,
   std::vector<SkCanvas*> GetCurrentCanvases() override;
 
   // |flutter::ExternalViewEmbedder|
-  SkCanvas* CompositeEmbeddedView(int view_id, const flutter::EmbeddedViewParams& params) override;
+  SkCanvas* CompositeEmbeddedView(int view_id,
+                                  std::unique_ptr<flutter::EmbeddedViewParams> params) override;
 
   // |flutter::ExternalViewEmbedder|
   bool SubmitFrame(GrContext* context) override;

shell/platform/darwin/ios/ios_surface_gl.mm

@@ -102,10 +102,10 @@
 }
 
 SkCanvas* IOSSurfaceGL::CompositeEmbeddedView(int view_id,
-                                              const flutter::EmbeddedViewParams& params) {
+                                              std::unique_ptr<flutter::EmbeddedViewParams> params) {
   FlutterPlatformViewsController* platform_views_controller = GetPlatformViewsController();
   FML_CHECK(platform_views_controller != nullptr);
-  return platform_views_controller->CompositeEmbeddedView(view_id, params);
+  return platform_views_controller->CompositeEmbeddedView(view_id, std::move(params));
 }
 
 bool IOSSurfaceGL::SubmitFrame(GrContext* context) {

shell/platform/darwin/ios/ios_surface_software.h

@@ -55,7 +55,8 @@ class IOSSurfaceSoftware final : public IOSSurface,
   std::vector<SkCanvas*> GetCurrentCanvases() override;
 
   // |flutter::ExternalViewEmbedder|
-  SkCanvas* CompositeEmbeddedView(int view_id, const flutter::EmbeddedViewParams& params) override;
+  SkCanvas* CompositeEmbeddedView(int view_id,
+                                  std::unique_ptr<flutter::EmbeddedViewParams> params) override;
 
   // |flutter::ExternalViewEmbedder|
   bool SubmitFrame(GrContext* context) override;

shell/platform/darwin/ios/ios_surface_software.mm

@@ -153,11 +153,12 @@
   return platform_views_controller->GetCurrentCanvases();
 }
 
-SkCanvas* IOSSurfaceSoftware::CompositeEmbeddedView(int view_id,
-                                                    const flutter::EmbeddedViewParams& params) {
+SkCanvas* IOSSurfaceSoftware::CompositeEmbeddedView(
+    int view_id,
+    std::unique_ptr<flutter::EmbeddedViewParams> params) {
   FlutterPlatformViewsController* platform_views_controller = GetPlatformViewsController();
   FML_CHECK(platform_views_controller != nullptr);
-  return platform_views_controller->CompositeEmbeddedView(view_id, params);
+  return platform_views_controller->CompositeEmbeddedView(view_id, std::move(params));
 }
 
 bool IOSSurfaceSoftware::SubmitFrame(GrContext* context) {