[Android] Provide synchronized input flush with BeginFrame

content/browser/renderer_host/render_widget_host_view_android.h

Index: content/browser/renderer_host/render_widget_host_view_android.h
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index 8f6a1d994b5c4a5ccdfba1e768e5eec8b2b66529..9e46acb1760f0a8c8f65216dee3cf40b08a00bc7 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -151,6 +151,7 @@ class RenderWidgetHostViewAndroid
       const WebKit::WebMouseWheelEvent& event) OVERRIDE;
   virtual InputEventAckState FilterInputEvent(
       const WebKit::WebInputEvent& input_event) OVERRIDE;
+  virtual void OnSetNeedsFlushInput() OVERRIDE;
   virtual void GestureEventAck(int gesture_event_type,
                                InputEventAckState ack_result) OVERRIDE;
   virtual void OnAccessibilityEvents(
@@ -329,6 +330,8 @@ class RenderWidgetHostViewAndroid
   bool overscroll_effect_enabled_;
   scoped_ptr<OverscrollGlow> overscroll_effect_;
 
+  bool flush_input_requested_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };