Estimate draw duration in SchedulerClient

cc/trees/thread_proxy.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_THREAD_PROXY_H_
 #define CC_TREES_THREAD_PROXY_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/completion_event.h"
 #include "cc/resources/resource_update_controller.h"
+#include "cc/scheduler/rolling_time_delta_history.h"
 #include "cc/scheduler/scheduler.h"
 #include "cc/scheduler/vsync_time_source.h"
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/proxy.h"
 
 namespace cc {
 
 class ContextProvider;
 class InputHandlerClient;
 class LayerTreeHost;
@@ skipping 71 matching lines @@
   virtual ScheduledActionDrawAndSwapResult
       ScheduledActionDrawAndSwapIfPossible() OVERRIDE;
   virtual ScheduledActionDrawAndSwapResult ScheduledActionDrawAndSwapForced()
       OVERRIDE;
   virtual void ScheduledActionCommit() OVERRIDE;
   virtual void ScheduledActionCheckForCompletedTileUploads() OVERRIDE;
   virtual void ScheduledActionActivatePendingTreeIfNeeded() OVERRIDE;
   virtual void ScheduledActionBeginOutputSurfaceCreation() OVERRIDE;
   virtual void ScheduledActionAcquireLayerTexturesForMainThread() OVERRIDE;
   virtual void DidAnticipatedDrawTimeChange(base::TimeTicks time) OVERRIDE;
+  virtual base::TimeDelta DrawDurationEstimate() OVERRIDE;
 
   // ResourceUpdateControllerClient implementation
   virtual void ReadyToFinalizeTextureUpdates() OVERRIDE;
 
   // VSyncProvider implementation
   virtual void RequestVSyncNotification(VSyncClient* client) OVERRIDE;
 
   int MaxFramesPendingForTesting() const {
     return scheduler_on_impl_thread_->MaxFramesPending();
   }
@@ skipping 138 matching lines @@
   VSyncClient* vsync_client_;
 
   bool inside_draw_;
 
   bool defer_commits_;
   scoped_ptr<BeginFrameAndCommitState> pending_deferred_commit_;
 
   base::TimeTicks smoothness_takes_priority_expiration_time_;
   bool renew_tree_priority_on_impl_thread_pending_;
 
+  RollingTimeDeltaHistory draw_duration_history_;
+
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_THREAD_PROXY_H_