cc: Move timing history to the Scheduler.

cc/scheduler/compositor_timing_history.h

Index: cc/scheduler/compositor_timing_history.h
diff --git a/cc/trees/proxy_timing_history.h b/cc/scheduler/compositor_timing_history.h
similarity index 78%
rename from cc/trees/proxy_timing_history.h
rename to cc/scheduler/compositor_timing_history.h
index aa213b6bdb7dbaca33a8a81a84e56cca1a2bb919..f38c3dbcf9e6955fe5f9cf08529063a2d3013911 100644
--- a/cc/trees/proxy_timing_history.h
+++ b/cc/scheduler/compositor_timing_history.h
@@ -2,25 +2,26 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CC_TREES_PROXY_TIMING_HISTORY_H_
-#define CC_TREES_PROXY_TIMING_HISTORY_H_
+#ifndef CC_SCHEDULER_COMPOSITOR_TIMING_HISTORY_H_
+#define CC_SCHEDULER_COMPOSITOR_TIMING_HISTORY_H_
 
 #include "cc/base/rolling_time_delta_history.h"
-#include "cc/debug/rendering_stats_instrumentation.h"
 
 namespace cc {
 
-class ProxyTimingHistory {
+class RenderingStatsInstrumentation;
+
+class CompositorTimingHistory {
  public:
-  explicit ProxyTimingHistory(
+  explicit CompositorTimingHistory(
       RenderingStatsInstrumentation* rendering_stats_instrumentation);
-  ~ProxyTimingHistory();
+  ~CompositorTimingHistory();
 
   base::TimeDelta DrawDurationEstimate() const;
   base::TimeDelta BeginMainFrameToCommitDurationEstimate() const;
   base::TimeDelta CommitToActivateDurationEstimate() const;
 
-  void DidBeginMainFrame();
+  void WillBeginMainFrame();
   void DidCommit();
   void DidActivateSyncTree();
   void DidStartDrawing();
@@ -43,4 +44,4 @@ class ProxyTimingHistory {
 
 }  // namespace cc
 
-#endif  // CC_TREES_PROXY_TIMING_HISTORY_H_
+#endif  // CC_SCHEDULER_COMPOSITOR_TIMING_HISTORY_H_