Adding compositor callbacks to RenderWidgetHostViewAndroid

content/public/browser/android/compositor.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
 #define CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
 
 #include "base/callback.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/resources/ui_resource_client.h"
 #include "content/common/content_export.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 
 namespace cc {
 class Layer;
 }
 
 namespace gfx {
 class JavaBitmap;
 }
 
 namespace content {
 class CompositorClient;
+class CompositorObserver;
 
 // An interface to the browser-side compositor.
 class CONTENT_EXPORT Compositor {
  public:
   virtual ~Compositor() {}
 
   // Performs the global initialization needed before any compositor
   // instance can be used. This should be called only once.
   static void Initialize();
 
@@ skipping 54 matching lines @@
   virtual bool CopyTextureToBitmap(WebKit::WebGLId texture_id,
                                    gfx::JavaBitmap& bitmap) = 0;
 
   // Grabs a copy of |texture_id| and saves it into |bitmap|.  No scaling is
   // done. |src_rect| allows the caller to specify which rect of |texture_id|
   // to copy to |bitmap|.  It needs to match the size of |bitmap|.  Returns
   // true if the |texture_id| was copied into |bitmap|, false if not.
   virtual bool CopyTextureToBitmap(WebKit::WebGLId texture_id,
                                    const gfx::Rect& src_rect,
                                    gfx::JavaBitmap& bitmap) = 0;
+  virtual void AddObserver(CompositorObserver* observer) = 0;
+  virtual void RemoveObserver(CompositorObserver* observer) = 0;
+  virtual bool HasObserver(CompositorObserver* observer) = 0;
+
  protected:
   Compositor() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_