Add compositor support for the LatencyInfo.

cc/trees/layer_tree_host.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_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/cancelable_callback.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time.h"
 #include "cc/animation/animation_events.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/scoped_ptr_vector.h"
+#include "cc/debug/latency_info.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/output/output_surface.h"
 #include "cc/scheduler/rate_limiter.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_settings.h"
 #include "cc/trees/occlusion_tracker.h"
 #include "cc/trees/proxy.h"
 #include "skia/ext/refptr.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbar.h"
@@ skipping 173 matching lines @@
   bool visible() const { return visible_; }
 
   void StartPageScaleAnimation(gfx::Vector2d target_offset,
                                bool use_anchor,
                                float scale,
                                base::TimeDelta duration);
 
   void ApplyScrollAndScale(const ScrollAndScaleSet& info);
 
   void SetImplTransform(const gfx::Transform& transform);
+  void SetLatencyInfo(const LatencyInfo& latency_info);
 
   void StartRateLimiter(WebKit::WebGraphicsContext3D* context3d);
   void StopRateLimiter(WebKit::WebGraphicsContext3D* context3d);
 
   // RateLimiterClient implementation.
   virtual void RateLimit() OVERRIDE;
 
   bool buffered_updates() const {
     return settings_.max_partial_texture_updates !=
         std::numeric_limits<size_t>::max();
@@ skipping 108 matching lines @@
   struct PendingPageScaleAnimation {
     gfx::Vector2d target_offset;
     bool use_anchor;
     float scale;
     base::TimeDelta duration;
   };
   scoped_ptr<PendingPageScaleAnimation> pending_page_scale_animation_;
 
   bool in_paint_layer_contents_;
 
+  LatencyInfo latency_info_;
+
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_