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

cc/input/layer_scroll_offset_delegate.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 CC_INPUT_LAYER_SCROLL_OFFSET_DELEGATE_H_
 #define CC_INPUT_LAYER_SCROLL_OFFSET_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "ui/gfx/size_f.h"
 #include "ui/gfx/vector2d_f.h"
@@ skipping 16 matching lines @@
 
   // This is called by the compositor to query the current scroll offset of the
   // layer.
   // There is no requirement that the return values of this method are
   // stable in time (two subsequent calls may yield different results).
   // The return value is not required to be related to the values passed in to
   // the SetTotalScrollOffset method in any way however it is required to be no
   // more than the value passed to the most recent SetMaxScrollOffset call.
   virtual gfx::Vector2dF GetTotalScrollOffset() = 0;
 
-  // This is called by the compositor to check whether a delegate-managed fling
-  // is active or not.
-  virtual bool IsExternalFlingActive() const = 0;
-
   // This is called by the compositor to notify the delegate what is the current
   // page scale factor is.
   virtual void SetTotalPageScaleFactor(float page_scale_factor) = 0;
 
   // This is called by the compositor to notify the delegate what is the layer's
   // scrollable size is.
   virtual void SetScrollableSize(gfx::SizeF scrollable_size) = 0;
 
  protected:
   LayerScrollOffsetDelegate() {}
   virtual ~LayerScrollOffsetDelegate() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LayerScrollOffsetDelegate);
 };
 
 }  // namespace cc
 
 #endif  // CC_INPUT_LAYER_SCROLL_OFFSET_DELEGATE_H_