Add swap buffers posted method

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 "content/common/content_export.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 15 matching lines @@
 // An interface to the browser-side compositor.
 class CONTENT_EXPORT Compositor {
  public:
   class Client {
    public:
     // Tells the client that it should schedule a composite.
     virtual void ScheduleComposite() = 0;
 
     // The compositor has completed swapping a frame.
     virtual void OnSwapBuffersCompleted() {}
+
+    // The compositor will eventually swap a frame.
+    virtual void OnSwapBuffersPosted() {}
   };
 
   virtual ~Compositor() {}
 
   // Performs the global initialization needed before any compositor
   // instance can be used. This should be called only once.
   static void Initialize();
 
   enum CompositorFlags {
     // Creates a direct GL context on the thread that draws
@@ skipping 68 matching lines @@
   virtual bool CopyTextureToBitmap(WebKit::WebGLId texture_id,
                                    const gfx::Rect& src_rect,
                                    gfx::JavaBitmap& bitmap) = 0;
  protected:
   Compositor() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_