Support focus highlight in Android window

chrome/browser/chromeos/accessibility/accessibility_highlight_manager.h

 // Copyright (c) 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_HIGHLIGHT_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_HIGHLIGHT_MANAGER_H_
 
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "ui/aura/client/cursor_client_observer.h"
 #include "ui/base/ime/input_method.h"
 #include "ui/base/ime/input_method_observer.h"
 #include "ui/base/ime/text_input_client.h"
 #include "ui/events/event.h"
 #include "ui/events/event_handler.h"
 
+namespace gfx {
+class Rect;
+}  // namespace gfx
+
 namespace chromeos {
 
 // Manage visual highlights that Chrome OS can draw around the focused
 // object, the cursor, and the text caret for accessibility.
 class AccessibilityHighlightManager
     : public ui::EventHandler,
       public content::NotificationObserver,
       public ui::InputMethodObserver,
       public aura::client::CursorClientObserver {
  public:
   AccessibilityHighlightManager();
   ~AccessibilityHighlightManager() override;
 
   void HighlightFocus(bool focus);
   void HighlightCursor(bool cursor);
   void HighlightCaret(bool caret);
 
   void RegisterObservers();
 
+  // OnViewFocusedInArc is called when a view is focused in arc window and
+  // accessibility focus highlight is enabled.
+  void OnViewFocusedInArc(const gfx::Rect& bounds_in_screen);
+
  protected:
   FRIEND_TEST_ALL_PREFIXES(AccessibilityFocusRingControllerTest,
                            CursorWorksOnMultipleDisplays);
 
   // ui::EventHandler overrides:
   void OnMouseEvent(ui::MouseEvent* event) override;
   void OnKeyEvent(ui::KeyEvent* event) override;
 
   // content::NotificationObserver overrides:
   void Observe(int type,
@@ skipping 30 matching lines @@
 
   bool registered_observers_ = false;
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(AccessibilityHighlightManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ACCESSIBILITY_ACCESSIBILITY_HIGHLIGHT_MANAGER_H_