compositor-worker: cc->blink mutation plumbing

cc/trees/layer_tree_host_client.h

 // Copyright 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 CC_TREES_LAYER_TREE_HOST_CLIENT_H_
 #define CC_TREES_LAYER_TREE_HOST_CLIENT_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
+#include "cc/animation/layer_tree_mutations.h"
 #include "cc/debug/frame_timing_tracker.h"
 
 namespace gfx {
 class Vector2d;
 class Vector2dF;
 }
 
 namespace cc {
 class ContextProvider;
 class InputHandlerClient;
@@ skipping 19 matching lines @@
   // state. (The "compositing state" will result in a mutated layer tree on the
   // LayerTreeHost via additional interface indirections which lead back to
   // mutations on the LayerTreeHost.)
   virtual void UpdateLayerTreeHost() = 0;
   virtual void ApplyViewportDeltas(
       const gfx::Vector2dF& inner_delta,
       const gfx::Vector2dF& outer_delta,
       const gfx::Vector2dF& elastic_overscroll_delta,
       float page_scale,
       float top_controls_delta) = 0;
+  virtual void ApplyMutations(const LayerTreeMutations& mutations) = 0;
   // Request an OutputSurface from the client. When the client has one it should
   // call LayerTreeHost::SetOutputSurface.  This will result in either
   // DidFailToInitializeOutputSurface or DidInitializeOutputSurface being
   // called.
   virtual void RequestNewOutputSurface() = 0;
   virtual void DidInitializeOutputSurface() = 0;
   virtual void DidFailToInitializeOutputSurface() = 0;
   virtual void WillCommit() = 0;
   virtual void DidCommit() = 0;
   virtual void DidCommitAndDrawFrame() = 0;
   virtual void DidCompleteSwapBuffers() = 0;
   virtual void RecordFrameTimingEvents(
       scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
       scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events) = 0;
 
   // Called when page scale animation has completed.
   virtual void DidCompletePageScaleAnimation() = 0;
 
   // TODO(simonhong): Makes this to pure virtual function when client
   // implementation is ready.
   virtual void SendBeginFramesToChildren(const BeginFrameArgs& args) {}
 
  protected:
   virtual ~LayerTreeHostClient() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_CLIENT_H_