cc: Improve frame/commit accounting

cc/single_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 "config.h"
 
 #include "CCSingleThreadProxy.h"
 
 #include "CCDrawQuad.h"
+#include "CCFrameRateCounter.h"
 #include "CCGraphicsContext.h"
 #include "CCLayerTreeHost.h"
 #include "CCTextureUpdateController.h"
 #include "CCTimer.h"
 #include "TraceEvent.h"
 #include <wtf/CurrentTime.h>
 
 using namespace WTF;
 
 namespace cc {
@@ skipping 90 matching lines @@
 bool CCSingleThreadProxy::initializeRenderer()
 {
     ASSERT(CCProxy::isMainThread());
     ASSERT(m_contextBeforeInitialization.get());
     {
         DebugScopedSetImplThread impl;
         bool ok = m_layerTreeHostImpl->initializeRenderer(m_contextBeforeInitialization.Pass());
         if (ok) {
             m_rendererInitialized = true;
             m_RendererCapabilitiesForMainThread = m_layerTreeHostImpl->rendererCapabilities();
+            onVSyncParametersChanged(0, 1.0/60.0);
         }
 
         return ok;
     }
 }
 
 bool CCSingleThreadProxy::recreateContext()
 {
     TRACE_EVENT0("cc", "CCSingleThreadProxy::recreateContext");
     ASSERT(CCProxy::isMainThread());
@@ skipping 173 matching lines @@
         if (m_rendererInitialized)
             m_layerTreeHostImpl->renderer()->doNoOp();
     }
 }
 
 void CCSingleThreadProxy::onSwapBuffersCompleteOnImplThread()
 {
     ASSERT_NOT_REACHED();
 }
 
+void CCSingleThreadProxy::onVSyncParametersChanged(double monotonicTimebase, double intervalInSeconds)
+{
+    TRACE_EVENT2("cc", "CCSingleThreadProxy::onVSyncParametersChanged", "monotonicTimebase", monotonicTimebase, "intervalInSeconds", intervalInSeconds);
+    base::TimeTicks timebase = base::TimeTicks::FromInternalValue(monotonicTimebase * base::Time::kMicrosecondsPerSecond);
+    base::TimeDelta interval = base::TimeDelta::FromMicroseconds(intervalInSeconds * base::Time::kMicrosecondsPerSecond);
+    m_layerTreeHostImpl->fpsCounter()->setTimebaseAndInterval(timebase, interval);
+}
+
 bool CCSingleThreadProxy::commitAndComposite()
 {
     ASSERT(CCProxy::isMainThread());
 
     if (!m_layerTreeHost->initializeRendererIfNeeded())
         return false;
 
     // Unlink any texture backings that were deleted
     CCPrioritizedTextureManager::BackingVector evictedContentsTexturesBackings;
     {
@@ skipping 51 matching lines @@
 
 void CCSingleThreadProxy::didSwapFrame()
 {
     if (m_nextFrameIsNewlyCommittedFrame) {
         m_nextFrameIsNewlyCommittedFrame = false;
         m_layerTreeHost->didCommitAndDrawFrame();
     }
 }
 
 }