Notify OverscrollController of gesture events in plugins.

content/browser/frame_host/render_widget_host_view_guest.h

 // Copyright 2014 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_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 108 matching lines @@
   void StopSpeaking() override;
 #endif  // defined(OS_MACOSX)
 
   void OnSetNeedsFlushInput() override;
   void WheelEventAck(const blink::WebMouseWheelEvent& event,
                      InputEventAckState ack_result) override;
 
   void GestureEventAck(const blink::WebGestureEvent& event,
                        InputEventAckState ack_result) override;
 
+  InputEventAckState FilterInputEvent(
+      const blink::WebInputEvent& input_event) override;
+
   bool IsRenderWidgetHostViewGuest() override;
   RenderWidgetHostViewBase* GetOwnerRenderWidgetHostView() const;
 
  private:
   friend class RenderWidgetHostView;
 
   void SendSurfaceInfoToEmbedderImpl(
       const cc::SurfaceInfo& surface_info,
       const cc::SurfaceSequence& sequence) override;
 
@@ skipping 31 matching lines @@
   // The guest may forward its updates only when there is an ongoing IME
   // session.
   bool should_forward_text_selection_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_