Add latency measurement system

cc/thread_proxy.cc

 // 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.
 
 #include "cc/thread_proxy.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "cc/delay_based_time_source.h"
 #include "cc/draw_quad.h"
@@ skipping 849 matching lines @@
 }
 
 void ThreadProxy::didCommitAndDrawFrame()
 {
     DCHECK(isMainThread());
     if (!m_layerTreeHost)
         return;
     m_layerTreeHost->didCommitAndDrawFrame();
 }
 
+void ThreadProxy::onReceivedLatencyInfo(const LatencyInfo& latencyInfo)
+{
+    DCHECK(isImplThread());
+    Proxy::mainThread()->postTask(base::Bind(&ThreadProxy::receivedLatencyInfo, base::Unretained(this), latencyInfo));
+}
+
+void ThreadProxy::receivedLatencyInfo(const LatencyInfo& latencyInfo)
+{
+    DCHECK(isMainThread());
+    if (!m_layerTreeHost)
+        return;
+    m_layerTreeHost->onReceivedLatencyInfo(latencyInfo);
+}
+
 void ThreadProxy::didCompleteSwapBuffers()
 {
     DCHECK(isMainThread());
     if (!m_layerTreeHost)
         return;
     m_layerTreeHost->didCompleteSwapBuffers();
 }
 
 void ThreadProxy::setAnimationEvents(scoped_ptr<AnimationEventsVector> events, base::Time wallClockTime)
 {
@@ skipping 133 matching lines @@
 }
 
 void ThreadProxy::commitPendingOnImplThreadForTesting(CommitPendingRequest* request)
 {
     DCHECK(isImplThread());
     request->commitPending = m_schedulerOnImplThread->commitPending();
     request->completion.signal();
 }
 
 }  // namespace cc