cc: Add main frame timing info to frame timing tracker.

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 <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 125 matching lines @@
     // Whether a commit has been completed since the last time animations were
     // ticked. If this happens, we need to animate again.
     bool did_commit_after_animating;
 
     DelayedUniqueNotifier smoothness_priority_expiration_notifier;
 
     ProxyTimingHistory timing_history;
 
     scoped_ptr<BeginFrameSource> external_begin_frame_source;
 
+    // Values used to keep track of frame durations. Used only in frame timing.
+    BeginFrameArgs last_begin_main_frame_args;
+    BeginFrameArgs last_processed_begin_main_frame_args;
+
     scoped_ptr<LayerTreeHostImpl> layer_tree_host_impl;
     base::WeakPtrFactory<ThreadProxy> weak_factory;
   };
 
   const MainThreadOnly& main() const;
   const MainThreadOrBlockedMainThread& blocked_main() const;
   const CompositorThreadOnly& impl() const;
 
   // Proxy implementation
   void FinishAllRendering() override;
@@ skipping 146 matching lines @@
 
   base::WeakPtr<ThreadProxy> main_thread_weak_ptr_;
   base::WeakPtr<ThreadProxy> impl_thread_weak_ptr_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_THREAD_PROXY_H_