Animated scroll shouldn't consume unhandled scrolls for OOPIFs.

content/browser/renderer_host/compositor_impl_android.h

 // Copyright (c) 2012 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_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 84 matching lines @@
                                          bool has_scrolled_by_touch) override {}
   void RequestNewCompositorFrameSink() override;
   void DidInitializeCompositorFrameSink() override;
   void DidFailToInitializeCompositorFrameSink() override;
   void WillCommit() override {}
   void DidCommit() override;
   void DidCommitAndDrawFrame() override {}
   void DidReceiveCompositorFrameAck() override;
   void DidCompletePageScaleAnimation() override {}
 
+  bool IsForSubframe() override;

[Charlie Reis, 2017/04/18 21:59:03]

nit: No blank line before, since this is part of the LayerTreeHostClient block.

[wjmaclean, 2017/04/18 23:26:49]

Done.

+
   // LayerTreeHostSingleThreadClient implementation.
   void DidSubmitCompositorFrame() override;
   void DidLoseCompositorFrameSink() override;
 
   // WindowAndroidCompositor implementation.
   void AttachLayerForReadback(scoped_refptr<cc::Layer> layer) override;
   void RequestCopyOfOutputOnRootLayer(
       std::unique_ptr<cc::CopyOutputRequest> request) override;
   void SetNeedsAnimate() override;
   cc::FrameSinkId GetFrameSinkId() override;
@@ skipping 68 matching lines @@
   std::unordered_set<cc::FrameSinkId, cc::FrameSinkIdHash>
       pending_child_frame_sink_ids_;
   base::WeakPtrFactory<CompositorImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_