compositor-worker: cc->blink mutation plumbing

cc/trees/layer_tree_host_impl.h

 // Copyright 2011 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_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <stddef.h>
 
 #include <set>
 #include <string>
 #include <unordered_map>
 #include <vector>
 
+#include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/synced_property.h"
 #include "cc/debug/frame_timing_tracker.h"
 #include "cc/debug/micro_benchmark_controller_impl.h"
 #include "cc/input/input_handler.h"
 #include "cc/input/scrollbar_animation_controller.h"
@@ skipping 47 matching lines @@
 class SwapPromise;
 class SwapPromiseMonitor;
 class SynchronousTaskGraphRunner;
 class TextureMailboxDeleter;
 class TopControlsManager;
 class UIResourceBitmap;
 class UIResourceRequest;
 struct ScrollAndScaleSet;
 class Viewport;
 
+using BeginFrameCallbackList = std::vector<base::Closure>;
+
 enum class GpuRasterizationStatus {
   ON,
   ON_FORCED,
   OFF_DEVICE,
   OFF_VIEWPORT,
   MSAA_CONTENT,
   OFF_CONTENT
 };
 
 // LayerTreeHost->Proxy callback interface.
@@ skipping 358 matching lines @@
 
   ManagedMemoryPolicy ActualManagedMemoryPolicy() const;
 
   size_t memory_allocation_limit_bytes() const;
 
   void SetViewportSize(const gfx::Size& device_viewport_size);
   gfx::Size device_viewport_size() const { return device_viewport_size_; }
 
   const gfx::Transform& DrawTransform() const;
 
+  scoped_ptr<BeginFrameCallbackList> ProcessLayerTreeMutations();
+
   scoped_ptr<ScrollAndScaleSet> ProcessScrollDeltas();
 
   void set_max_memory_needed_bytes(size_t bytes) {
     max_memory_needed_bytes_ = bytes;
   }
 
   FrameRateCounter* fps_counter() {
     return fps_counter_.get();
   }
   MemoryHistory* memory_history() {
@@ skipping 367 matching lines @@
   scoped_ptr<FrameTimingTracker> frame_timing_tracker_;
 
   scoped_ptr<Viewport> viewport_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_