Plumb smooth scrolling in Chromium compositor

content/browser/android/in_process/synchronous_compositor_impl.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_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 69 matching lines @@
   void SetIsActive(bool is_active) override;
 
   // LayerScrollOffsetDelegate
   gfx::ScrollOffset GetTotalScrollOffset() override;
   void UpdateRootLayerState(const gfx::ScrollOffset& total_scroll_offset,
                             const gfx::ScrollOffset& max_scroll_offset,
                             const gfx::SizeF& scrollable_size,
                             float page_scale_factor,
                             float min_page_scale_factor,
                             float max_page_scale_factor) override;
-  bool IsExternalScrollActive() const override;
   void SetNeedsAnimate(const AnimationCallback& scroll_animation) override;
 
   void DidOverscroll(const DidOverscrollParams& params);
   void DidStopFlinging();
 
  private:
   friend class WebContentsUserData<SynchronousCompositorImpl>;
   friend class SynchronousCompositor;
   explicit SynchronousCompositorImpl(WebContents* contents);
   ~SynchronousCompositorImpl() override;
@@ skipping 17 matching lines @@
   bool renderer_needs_begin_frames_;
 
   base::WeakPtrFactory<SynchronousCompositorImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_