AndroidOverlay implementation using Dialog.

ui/android/window_android.h

 // Copyright 2013 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 UI_ANDROID_WINDOW_ANDROID_H_
 #define UI_ANDROID_WINDOW_ANDROID_H_
 
 #include <jni.h>
 #include <list>
 #include <memory>
@@ skipping 68 matching lines @@
                       bool paused);
 
   // Return whether the specified Android permission is granted.
   bool HasPermission(const std::string& permission);
   // Return whether the specified Android permission can be requested by Chrome.
   bool CanRequestPermission(const std::string& permission);
 
   static WindowAndroid* CreateForTesting();
   void DestroyForTesting();
 
+  // Return the window token for this window, if one exists.
+  base::android::ScopedJavaLocalRef<jobject> GetWindowToken();
+
  private:
   class WindowBeginFrameSource;
   friend class DisplayAndroidManager;
   friend class WindowBeginFrameSource;
 
   ~WindowAndroid() override;
 
   void SetNeedsBeginFrames(bool needs_begin_frames);
   void RequestVSyncUpdate();
 
@@ skipping 12 matching lines @@
   std::unique_ptr<WindowBeginFrameSource> begin_frame_source_;
   bool needs_begin_frames_;
   std::list<base::Closure> vsync_complete_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowAndroid);
 };
 
 }  // namespace ui
 
 #endif  // UI_ANDROID_WINDOW_ANDROID_H_