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static uint32_t ConvertAndroidKeyCodeToDOMKeyCode(int32_t androidKeyCode) {
  // Special-case alphanumeric keycodes because they are most common.
  if (androidKeyCode >= AKEYCODE_A && androidKeyCode <= AKEYCODE_Z) {
    return androidKeyCode - AKEYCODE_A + NS_VK_A;
  }

  if (androidKeyCode >= AKEYCODE_0 && androidKeyCode <= AKEYCODE_9) {
    return androidKeyCode - AKEYCODE_0 + NS_VK_0;
  }

  switch (androidKeyCode) {
    // KEYCODE_UNKNOWN (0) ... KEYCODE_HOME (3)
    case AKEYCODE_BACK:
      return NS_VK_ESCAPE;
    // KEYCODE_CALL (5) ... KEYCODE_POUND (18)
    case AKEYCODE_DPAD_UP:
      return NS_VK_UP;
    case AKEYCODE_DPAD_DOWN:
      return NS_VK_DOWN;
    case AKEYCODE_DPAD_LEFT:
      return NS_VK_LEFT;
    case AKEYCODE_DPAD_RIGHT:
      return NS_VK_RIGHT;
    case AKEYCODE_DPAD_CENTER:
      return NS_VK_RETURN;
    case AKEYCODE_VOLUME_UP:
      return NS_VK_VOLUME_UP;
    case AKEYCODE_VOLUME_DOWN:
      return NS_VK_VOLUME_DOWN;
    // KEYCODE_VOLUME_POWER (26) ... KEYCODE_Z (54)
    case AKEYCODE_COMMA:
      return NS_VK_COMMA;
    case AKEYCODE_PERIOD:
      return NS_VK_PERIOD;
    case AKEYCODE_ALT_LEFT:
      return NS_VK_ALT;
    case AKEYCODE_ALT_RIGHT:
      return NS_VK_ALT;
    case AKEYCODE_SHIFT_LEFT:
      return NS_VK_SHIFT;
    case AKEYCODE_SHIFT_RIGHT:
      return NS_VK_SHIFT;
    case AKEYCODE_TAB:
      return NS_VK_TAB;
    case AKEYCODE_SPACE:
      return NS_VK_SPACE;
    // KEYCODE_SYM (63) ... KEYCODE_ENVELOPE (65)
    case AKEYCODE_ENTER:
      return NS_VK_RETURN;
    case AKEYCODE_DEL:
      return NS_VK_BACK;  // Backspace
    case AKEYCODE_GRAVE:
      return NS_VK_BACK_QUOTE;
    // KEYCODE_MINUS (69)
    case AKEYCODE_EQUALS:
      return NS_VK_EQUALS;
    case AKEYCODE_LEFT_BRACKET:
      return NS_VK_OPEN_BRACKET;
    case AKEYCODE_RIGHT_BRACKET:
      return NS_VK_CLOSE_BRACKET;
    case AKEYCODE_BACKSLASH:
      return NS_VK_BACK_SLASH;
    case AKEYCODE_SEMICOLON:
      return NS_VK_SEMICOLON;
    // KEYCODE_APOSTROPHE (75)
    case AKEYCODE_SLASH:
      return NS_VK_SLASH;
    // KEYCODE_AT (77) ... KEYCODE_MEDIA_FAST_FORWARD (90)
    case AKEYCODE_MUTE:
      return NS_VK_VOLUME_MUTE;
    case AKEYCODE_PAGE_UP:
      return NS_VK_PAGE_UP;
    case AKEYCODE_PAGE_DOWN:
      return NS_VK_PAGE_DOWN;
    // KEYCODE_PICTSYMBOLS (94) ... KEYCODE_BUTTON_MODE (110)
    case AKEYCODE_ESCAPE:
      return NS_VK_ESCAPE;
    case AKEYCODE_FORWARD_DEL:
      return NS_VK_DELETE;
    case AKEYCODE_CTRL_LEFT:
      return NS_VK_CONTROL;
    case AKEYCODE_CTRL_RIGHT:
      return NS_VK_CONTROL;
    case AKEYCODE_CAPS_LOCK:
      return NS_VK_CAPS_LOCK;
    case AKEYCODE_SCROLL_LOCK:
      return NS_VK_SCROLL_LOCK;
    // KEYCODE_META_LEFT (117) ... KEYCODE_FUNCTION (119)
    case AKEYCODE_SYSRQ:
      return NS_VK_PRINTSCREEN;
    case AKEYCODE_BREAK:
      return NS_VK_PAUSE;
    case AKEYCODE_MOVE_HOME:
      return NS_VK_HOME;
    case AKEYCODE_MOVE_END:
      return NS_VK_END;
    case AKEYCODE_INSERT:
      return NS_VK_INSERT;
    // KEYCODE_FORWARD (125) ... KEYCODE_MEDIA_RECORD (130)
    case AKEYCODE_F1:
      return NS_VK_F1;
    case AKEYCODE_F2:
      return NS_VK_F2;
    case AKEYCODE_F3:
      return NS_VK_F3;
    case AKEYCODE_F4:
      return NS_VK_F4;
    case AKEYCODE_F5:
      return NS_VK_F5;
    case AKEYCODE_F6:
      return NS_VK_F6;
    case AKEYCODE_F7:
      return NS_VK_F7;
    case AKEYCODE_F8:
      return NS_VK_F8;
    case AKEYCODE_F9:
      return NS_VK_F9;
    case AKEYCODE_F10:
      return NS_VK_F10;
    case AKEYCODE_F11:
      return NS_VK_F11;
    case AKEYCODE_F12:
      return NS_VK_F12;
    case AKEYCODE_NUM_LOCK:
      return NS_VK_NUM_LOCK;
    case AKEYCODE_NUMPAD_0:
      return NS_VK_NUMPAD0;
    case AKEYCODE_NUMPAD_1:
      return NS_VK_NUMPAD1;
    case AKEYCODE_NUMPAD_2:
      return NS_VK_NUMPAD2;
    case AKEYCODE_NUMPAD_3:
      return NS_VK_NUMPAD3;
    case AKEYCODE_NUMPAD_4:
      return NS_VK_NUMPAD4;
    case AKEYCODE_NUMPAD_5:
      return NS_VK_NUMPAD5;
    case AKEYCODE_NUMPAD_6:
      return NS_VK_NUMPAD6;
    case AKEYCODE_NUMPAD_7:
      return NS_VK_NUMPAD7;
    case AKEYCODE_NUMPAD_8:
      return NS_VK_NUMPAD8;
    case AKEYCODE_NUMPAD_9:
      return NS_VK_NUMPAD9;
    case AKEYCODE_NUMPAD_DIVIDE:
      return NS_VK_DIVIDE;
    case AKEYCODE_NUMPAD_MULTIPLY:
      return NS_VK_MULTIPLY;
    case AKEYCODE_NUMPAD_SUBTRACT:
      return NS_VK_SUBTRACT;
    case AKEYCODE_NUMPAD_ADD:
      return NS_VK_ADD;
    case AKEYCODE_NUMPAD_DOT:
      return NS_VK_DECIMAL;
    case AKEYCODE_NUMPAD_COMMA:
      return NS_VK_SEPARATOR;
    case AKEYCODE_NUMPAD_ENTER:
      return NS_VK_RETURN;
    case AKEYCODE_NUMPAD_EQUALS:
      return NS_VK_EQUALS;
    // KEYCODE_NUMPAD_LEFT_PAREN (162) ... KEYCODE_CALCULATOR (210)

    // Needs to confirm the behavior.  If the key switches the open state
    // of Japanese IME (or switches input character between Hiragana and
    // Roman numeric characters), then, it might be better to use
    // NS_VK_KANJI which is used for Alt+Zenkaku/Hankaku key on Windows.
    case AKEYCODE_ZENKAKU_HANKAKU:
      return 0;
    case AKEYCODE_EISU:
      return NS_VK_EISU;
    case AKEYCODE_MUHENKAN:
      return NS_VK_NONCONVERT;
    case AKEYCODE_HENKAN:
      return NS_VK_CONVERT;
    case AKEYCODE_KATAKANA_HIRAGANA:
      return 0;
    case AKEYCODE_YEN:
      return NS_VK_BACK_SLASH;  // Same as other platforms.
    case AKEYCODE_RO:
      return NS_VK_BACK_SLASH;  // Same as other platforms.
    case AKEYCODE_KANA:
      return NS_VK_KANA;
    case AKEYCODE_ASSIST:
      return NS_VK_HELP;

    // the A key is the action key for gamepad devices.
    case AKEYCODE_BUTTON_A:
      return NS_VK_RETURN;

    default:
      ALOG(
          "ConvertAndroidKeyCodeToDOMKeyCode: "
          "No DOM keycode for Android keycode %d",
          int(androidKeyCode));
      return 0;
  }
}