[Android] Implementation of overscroll effect for Android L

content/renderer/input/input_handler_proxy.h

 // Copyright 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_RENDERER_INPUT_INPUT_HANDLER_PROXY_H_
 #define CONTENT_RENDERER_INPUT_INPUT_HANDLER_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 27 matching lines @@
   };
   EventDisposition HandleInputEventWithLatencyInfo(
       const blink::WebInputEvent& event,
       ui::LatencyInfo* latency_info);
   EventDisposition HandleInputEvent(const blink::WebInputEvent& event);
 
   // cc::InputHandlerClient implementation.
   virtual void WillShutdown() OVERRIDE;
   virtual void Animate(base::TimeTicks time) OVERRIDE;
   virtual void MainThreadHasStoppedFlinging() OVERRIDE;
-  virtual void DidOverscroll(const gfx::Vector2dF& accumulated_overscroll,
-                             const gfx::Vector2dF& latest_overscroll_delta)
-      OVERRIDE;
+  virtual void DidOverscroll(
+      const gfx::PointF& causal_event_viewport_point,
+      const gfx::Vector2dF& accumulated_overscroll,
+      const gfx::Vector2dF& latest_overscroll_delta) OVERRIDE;
 
   // blink::WebGestureCurveTarget implementation.
   virtual bool scrollBy(const blink::WebFloatSize& offset,
                         const blink::WebFloatSize& velocity);
 
   bool gesture_scroll_on_impl_thread_for_testing() const {
     return gesture_scroll_on_impl_thread_;
   }
 
  private:
@@ skipping 56 matching lines @@
   gfx::Vector2dF current_fling_velocity_;
 
   bool smooth_scroll_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(InputHandlerProxy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_INPUT_HANDLER_PROXY_H_