Adding compositor callbacks to RenderWidgetHostViewAndroid

content/browser/renderer_host/compositor_observer.h

+// Copyright (c) 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 CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_OBSERVER_H_
+#define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_OBSERVER_H_
+
+namespace content {
+
+class Compositor;
+
+class CONTENT_EXPORT CompositorObserver {
+ public:
+  virtual void OnCompositingDidCommit(Compositor* compositor) = 0;
+
+ protected:
+  virtual ~CompositorObserver() {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_OBSERVER_H