cc: Move timing history to the Scheduler.

cc/trees/single_thread_proxy.h

Index: cc/trees/single_thread_proxy.h
diff --git a/cc/trees/single_thread_proxy.h b/cc/trees/single_thread_proxy.h
index e9bd315784544a95fe023d5c0c07a5f3f71a993a..b860a14cc7c4ed3f3c6e85e27a51463d71d4f3db 100644
--- a/cc/trees/single_thread_proxy.h
+++ b/cc/trees/single_thread_proxy.h
@@ -15,7 +15,6 @@
 #include "cc/trees/blocking_task_runner.h"
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/proxy.h"
-#include "cc/trees/proxy_timing_history.h"
 
 namespace cc {
 
@@ -74,9 +73,6 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
   void ScheduledActionBeginOutputSurfaceCreation() override;
   void ScheduledActionPrepareTiles() override;
   void ScheduledActionInvalidateOutputSurface() override;
-  base::TimeDelta DrawDurationEstimate() override;
-  base::TimeDelta BeginMainFrameToCommitDurationEstimate() override;
-  base::TimeDelta CommitToActivateDurationEstimate() override;
   void SendBeginFramesToChildren(const BeginFrameArgs& args) override;
   void SendBeginMainFrameNotExpectedSoon() override;
 
@@ -152,7 +148,6 @@ class CC_EXPORT SingleThreadProxy : public Proxy,
 
   // Accessed from both threads.
   scoped_ptr<Scheduler> scheduler_on_impl_thread_;
-  ProxyTimingHistory timing_history_;
 
   scoped_ptr<BlockingTaskRunner::CapturePostTasks> commit_blocking_task_runner_;
   bool next_frame_is_newly_committed_frame_;