Remove all fling related stuff from the renderer assuming that browser side

content/renderer/gpu/input_handler_proxy.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_RENDERER_GPU_INPUT_HANDLER_PROXY_H_
 #define CONTENT_RENDERER_GPU_INPUT_HANDLER_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/input/input_handler.h"
 #include "content/common/content_export.h"
-#include "third_party/WebKit/public/web/WebActiveWheelFlingParameters.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
-#include "third_party/WebKit/public/platform/WebGestureCurve.h"
-#include "third_party/WebKit/public/platform/WebGestureCurveTarget.h"
 
 namespace content {
 
 class InputHandlerProxyClient;
 
 // This class is a proxy between the content input event filtering and the
 // compositor's input handling logic. InputHandlerProxy instances live entirely
 // on the compositor thread. Each InputHandler instance handles input events
 // intended for a specific WebWidget.
 class CONTENT_EXPORT InputHandlerProxy
-    : public cc::InputHandlerClient,
-      public NON_EXPORTED_BASE(WebKit::WebGestureCurveTarget) {
+    : public cc::InputHandlerClient {
  public:
   explicit InputHandlerProxy(cc::InputHandler* input_handler);
   virtual ~InputHandlerProxy();
 
   void SetClient(InputHandlerProxyClient* client);
 
   enum EventDisposition {
     DID_HANDLE,
     DID_NOT_HANDLE,
     DROP_EVENT
   };
   EventDisposition HandleInputEventWithLatencyInfo(
       const WebKit::WebInputEvent& event,
       const ui::LatencyInfo& latency_info);
   EventDisposition HandleInputEvent(const WebKit::WebInputEvent& event);
 
   // cc::InputHandlerClient implementation.
   virtual void WillShutdown() OVERRIDE;
   virtual void Animate(base::TimeTicks time) OVERRIDE;
-  virtual void MainThreadHasStoppedFlinging() OVERRIDE;
   virtual void DidOverscroll(const cc::DidOverscrollParams& params) OVERRIDE;
 
-  // WebKit::WebGestureCurveTarget implementation.
-  virtual void scrollBy(const WebKit::WebFloatSize& offset);
-  virtual void notifyCurrentFlingVelocity(const WebKit::WebFloatSize& velocity);
-
   bool gesture_scroll_on_impl_thread_for_testing() const {
     return gesture_scroll_on_impl_thread_;
   }
 
  private:
-  EventDisposition HandleGestureFling(const WebKit::WebGestureEvent& event);
-
-  // Returns true if we scrolled by the increment.
-  bool TouchpadFlingScroll(const WebKit::WebFloatSize& increment);
-
-  // Returns true if we actually had an active fling to cancel.
-  bool CancelCurrentFling();
-
-  scoped_ptr<WebKit::WebGestureCurve> fling_curve_;
-  // Parameters for the active fling animation, stored in case we need to
-  // transfer it out later.
-  WebKit::WebActiveWheelFlingParameters fling_parameters_;
-
   InputHandlerProxyClient* client_;
   cc::InputHandler* input_handler_;
 
 #ifndef NDEBUG
   bool expect_scroll_update_end_;
   bool expect_pinch_update_end_;
 #endif
   bool gesture_scroll_on_impl_thread_;
   bool gesture_pinch_on_impl_thread_;
-  // This is always false when there are no flings on the main thread, but
-  // conservative in the sense that we might not be actually flinging when it is
-  // true.
-  bool fling_may_be_active_on_main_thread_;
-  // The axes on which the current fling has overshot the bounds of the content.
-  bool fling_overscrolled_horizontally_;
-  bool fling_overscrolled_vertically_;
 
   DISALLOW_COPY_AND_ASSIGN(InputHandlerProxy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_INPUT_HANDLER_PROXY_H_