cc: Switch to Chromium DCHECKs LOGs

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 "config.h"
 
 #include "CCThreadProxy.h"
 
 #include "CCDelayBasedTimeSource.h"
 #include "CCDrawQuad.h"
@@ skipping 37 matching lines @@
     , m_mainThreadProxy(CCScopedThreadProxy::create(CCProxy::mainThread()))
     , m_beginFrameCompletionEventOnImplThread(0)
     , m_readbackRequestOnImplThread(0)
     , m_commitCompletionEventOnImplThread(0)
     , m_textureAcquisitionCompletionEventOnImplThread(0)
     , m_nextFrameIsNewlyCommittedFrameOnImplThread(false)
     , m_renderVSyncEnabled(layerTreeHost->settings().renderVSyncEnabled)
     , m_totalCommitCount(0)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::CCThreadProxy");
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 }
 
 CCThreadProxy::~CCThreadProxy()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::~CCThreadProxy");
-    ASSERT(isMainThread());
-    ASSERT(!m_started);
+    DCHECK(isMainThread());
+    DCHECK(!m_started);
 }
 
 bool CCThreadProxy::compositeAndReadback(void *pixels, const IntRect& rect)
 {
     TRACE_EVENT0("cc", "CCThreadPRoxy::compositeAndReadback");
-    ASSERT(isMainThread());
-    ASSERT(m_layerTreeHost);
+    DCHECK(isMainThread());
+    DCHECK(m_layerTreeHost);
 
     if (!m_layerTreeHost->initializeRendererIfNeeded()) {
         TRACE_EVENT0("cc", "compositeAndReadback_EarlyOut_LR_Uninitialized");
         return false;
     }
 
 
     // Perform a synchronous commit.
     {
         DebugScopedSetMainThreadBlocked mainThreadBlocked;
@@ skipping 12 matching lines @@
     {
         DebugScopedSetMainThreadBlocked mainThreadBlocked;
         CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::requestReadbackOnImplThread, &request));
         request.completion.wait();
     }
     return request.success;
 }
 
 void CCThreadProxy::requestReadbackOnImplThread(ReadbackRequest* request)
 {
-    ASSERT(CCProxy::isImplThread());
-    ASSERT(!m_readbackRequestOnImplThread);
+    DCHECK(CCProxy::isImplThread());
+    DCHECK(!m_readbackRequestOnImplThread);
     if (!m_layerTreeHostImpl.get()) {
         request->success = false;
         request->completion.signal();
         return;
     }
 
     m_readbackRequestOnImplThread = request;
     m_schedulerOnImplThread->setNeedsRedraw();
     m_schedulerOnImplThread->setNeedsForcedRedraw();
 }
 
 void CCThreadProxy::startPageScaleAnimation(const IntSize& targetPosition, bool useAnchor, float scale, double duration)
 {
-    ASSERT(CCProxy::isMainThread());
+    DCHECK(CCProxy::isMainThread());
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::requestStartPageScaleAnimationOnImplThread, targetPosition, useAnchor, scale, duration));
 }
 
 void CCThreadProxy::requestStartPageScaleAnimationOnImplThread(IntSize targetPosition, bool useAnchor, float scale, double duration)
 {
-    ASSERT(CCProxy::isImplThread());
+    DCHECK(CCProxy::isImplThread());
     if (m_layerTreeHostImpl.get())
         m_layerTreeHostImpl->startPageScaleAnimation(targetPosition, useAnchor, scale, monotonicallyIncreasingTime(), duration);
 }
 
 void CCThreadProxy::finishAllRendering()
 {
-    ASSERT(CCProxy::isMainThread());
+    DCHECK(CCProxy::isMainThread());
 
     // Make sure all GL drawing is finished on the impl thread.
     DebugScopedSetMainThreadBlocked mainThreadBlocked;
     CCCompletionEvent completion;
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::finishAllRenderingOnImplThread, &completion));
     completion.wait();
 }
 
 bool CCThreadProxy::isStarted() const
 {
-    ASSERT(CCProxy::isMainThread());
+    DCHECK(CCProxy::isMainThread());
     return m_started;
 }
 
 bool CCThreadProxy::initializeContext()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::initializeContext");
     scoped_ptr<CCGraphicsContext> context = m_layerTreeHost->createContext();
     if (!context.get())
         return false;
 
@@ skipping 49 matching lines @@
     if (initializeSucceeded) {
         m_rendererInitialized = true;
         m_RendererCapabilitiesMainThreadCopy = capabilities;
     }
     return initializeSucceeded;
 }
 
 bool CCThreadProxy::recreateContext()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::recreateContext");
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     // Try to create the context.
     scoped_ptr<CCGraphicsContext> context = m_layerTreeHost->createContext();
     if (!context.get())
         return false;
     if (m_layerTreeHost->needsSharedContext())
         if (!WebSharedGraphicsContext3D::createCompositorThreadContext())
             return false;
 
     // Make a blocking call to recreateContextOnImplThread. The results of that
@@ skipping 10 matching lines @@
                                                        &capabilities));
     completion.wait();
 
     if (recreateSucceeded)
         m_RendererCapabilitiesMainThreadCopy = capabilities;
     return recreateSucceeded;
 }
 
 void CCThreadProxy::renderingStats(CCRenderingStats* stats)
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     DebugScopedSetMainThreadBlocked mainThreadBlocked;
     CCCompletionEvent completion;
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::renderingStatsOnImplThread,
                                                        &completion,
                                                        stats));
     stats->totalCommitTimeInSeconds = m_totalCommitTime.InSecondsF();
     stats->totalCommitCount = m_totalCommitCount;
 
     completion.wait();
 }
 
 const RendererCapabilities& CCThreadProxy::rendererCapabilities() const
 {
-    ASSERT(m_rendererInitialized);
+    DCHECK(m_rendererInitialized);
     return m_RendererCapabilitiesMainThreadCopy;
 }
 
 void CCThreadProxy::loseContext()
 {
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::didLoseContextOnImplThread));
 }
 
 void CCThreadProxy::setNeedsAnimate()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     if (m_animateRequested)
         return;
 
     TRACE_EVENT0("cc", "CCThreadProxy::setNeedsAnimate");
     m_animateRequested = true;
 
     if (m_commitRequestSentToImplThread)
         return;
     m_commitRequestSentToImplThread = true;
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::setNeedsCommitOnImplThread));
 }
 
 void CCThreadProxy::setNeedsCommit()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     if (m_commitRequested)
         return;
     TRACE_EVENT0("cc", "CCThreadProxy::setNeedsCommit");
     m_commitRequested = true;
 
     if (m_commitRequestSentToImplThread)
         return;
     m_commitRequestSentToImplThread = true;
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::setNeedsCommitOnImplThread));
 }
 
 void CCThreadProxy::didLoseContextOnImplThread()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::didLoseContextOnImplThread");
     m_schedulerOnImplThread->didLoseContext();
 }
 
 void CCThreadProxy::onSwapBuffersCompleteOnImplThread()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::onSwapBuffersCompleteOnImplThread");
     m_schedulerOnImplThread->didSwapBuffersComplete();
     m_mainThreadProxy->postTask(createCCThreadTask(this, &CCThreadProxy::didCompleteSwapBuffers));
 }
 
 void CCThreadProxy::onVSyncParametersChanged(double monotonicTimebase, double intervalInSeconds)
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT2("cc", "CCThreadProxy::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_schedulerOnImplThread->setTimebaseAndInterval(timebase, interval);
 }
 
 void CCThreadProxy::onCanDrawStateChanged(bool canDraw)
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT1("cc", "CCThreadProxy::onCanDrawStateChanged", "canDraw", canDraw);
     m_schedulerOnImplThread->setCanDraw(canDraw);
 }
 
 void CCThreadProxy::setNeedsCommitOnImplThread()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::setNeedsCommitOnImplThread");
     m_schedulerOnImplThread->setNeedsCommit();
 }
 
 void CCThreadProxy::setNeedsForcedCommitOnImplThread()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::setNeedsForcedCommitOnImplThread");
     m_schedulerOnImplThread->setNeedsCommit();
     m_schedulerOnImplThread->setNeedsForcedCommit();
 }
 
 void CCThreadProxy::postAnimationEventsToMainThreadOnImplThread(scoped_ptr<CCAnimationEventsVector> events, double wallClockTime)
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::postAnimationEventsToMainThreadOnImplThread");
     m_mainThreadProxy->postTask(createCCThreadTask(this, &CCThreadProxy::setAnimationEvents, events.release(), wallClockTime));
 }
 
 bool CCThreadProxy::reduceContentsTextureMemoryOnImplThread(size_t limitBytes)
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
 
     if (!m_layerTreeHost->contentsTextureManager())
         return false;
 
     if (!m_layerTreeHost->contentsTextureManager()->reduceMemoryOnImplThread(limitBytes, m_layerTreeHostImpl->resourceProvider()))
         return false;
 
     // The texture upload queue may reference textures that were just purged, clear
     // them from the queue.
     if (m_currentTextureUpdateControllerOnImplThread.get())
         m_currentTextureUpdateControllerOnImplThread->discardUploadsToEvictedResources();
     return true;
 }
 
 void CCThreadProxy::setNeedsRedraw()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     TRACE_EVENT0("cc", "CCThreadProxy::setNeedsRedraw");
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::setFullRootLayerDamageOnImplThread));
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::setNeedsRedrawOnImplThread));
 }
 
 bool CCThreadProxy::commitRequested() const
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     return m_commitRequested;
 }
 
 void CCThreadProxy::setNeedsRedrawOnImplThread()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     TRACE_EVENT0("cc", "CCThreadProxy::setNeedsRedrawOnImplThread");
     m_schedulerOnImplThread->setNeedsRedraw();
 }
 
 void CCThreadProxy::start()
 {
-    ASSERT(isMainThread());
-    ASSERT(CCProxy::implThread());
+    DCHECK(isMainThread());
+    DCHECK(CCProxy::implThread());
     // Create LayerTreeHostImpl.
     DebugScopedSetMainThreadBlocked mainThreadBlocked;
     CCCompletionEvent completion;
     scoped_ptr<CCInputHandler> handler = m_layerTreeHost->createInputHandler();
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::initializeImplOnImplThread, &completion, handler.release()));
     completion.wait();
 
     m_started = true;
 }
 
 void CCThreadProxy::stop()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::stop");
-    ASSERT(isMainThread());
-    ASSERT(m_started);
+    DCHECK(isMainThread());
+    DCHECK(m_started);
 
     // Synchronously deletes the impl.
     {
         DebugScopedSetMainThreadBlocked mainThreadBlocked;
 
         CCCompletionEvent completion;
         CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::layerTreeHostClosedOnImplThread, &completion));
         completion.wait();
     }
 
     m_mainThreadProxy->shutdown(); // Stop running tasks posted to us.
 
-    ASSERT(!m_layerTreeHostImpl.get()); // verify that the impl deleted.
+    DCHECK(!m_layerTreeHostImpl.get()); // verify that the impl deleted.
     m_layerTreeHost = 0;
     m_started = false;
 }
 
 void CCThreadProxy::forceSerializeOnSwapBuffers()
 {
     DebugScopedSetMainThreadBlocked mainThreadBlocked;
     CCCompletionEvent completion;
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::forceSerializeOnSwapBuffersOnImplThread, &completion));
     completion.wait();
 }
 
 void CCThreadProxy::forceSerializeOnSwapBuffersOnImplThread(CCCompletionEvent* completion)
 {
     if (m_rendererInitialized)
         m_layerTreeHostImpl->renderer()->doNoOp();
     completion->signal();
 }
 
 
 void CCThreadProxy::finishAllRenderingOnImplThread(CCCompletionEvent* completion)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::finishAllRenderingOnImplThread");
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_layerTreeHostImpl->finishAllRendering();
     completion->signal();
 }
 
 void CCThreadProxy::forceBeginFrameOnImplThread(CCCompletionEvent* completion)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::forceBeginFrameOnImplThread");
-    ASSERT(!m_beginFrameCompletionEventOnImplThread);
+    DCHECK(!m_beginFrameCompletionEventOnImplThread);
 
     if (m_schedulerOnImplThread->commitPending()) {
         completion->signal();
         return;
     }
 
     m_beginFrameCompletionEventOnImplThread = completion;
     setNeedsForcedCommitOnImplThread();
 }
 
 void CCThreadProxy::scheduledActionBeginFrame()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::scheduledActionBeginFrame");
-    ASSERT(!m_pendingBeginFrameRequest);
+    DCHECK(!m_pendingBeginFrameRequest);
     m_pendingBeginFrameRequest = make_scoped_ptr(new BeginFrameAndCommitState());
     m_pendingBeginFrameRequest->monotonicFrameBeginTime = monotonicallyIncreasingTime();
     m_pendingBeginFrameRequest->scrollInfo = m_layerTreeHostImpl->processScrollDeltas();
     m_pendingBeginFrameRequest->implTransform = m_layerTreeHostImpl->implTransform();
     m_pendingBeginFrameRequest->memoryAllocationLimitBytes = m_layerTreeHostImpl->memoryAllocationLimitBytes();
     if (m_layerTreeHost->contentsTextureManager())
          m_layerTreeHost->contentsTextureManager()->getEvictedBackings(m_pendingBeginFrameRequest->evictedContentsTexturesBackings);
 
     m_mainThreadProxy->postTask(createCCThreadTask(this, &CCThreadProxy::beginFrame));
 
     if (m_beginFrameCompletionEventOnImplThread) {
         m_beginFrameCompletionEventOnImplThread->signal();
         m_beginFrameCompletionEventOnImplThread = 0;
     }
 }
 
 void CCThreadProxy::beginFrame()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::beginFrame");
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     if (!m_layerTreeHost)
         return;
 
     if (!m_pendingBeginFrameRequest) {
         TRACE_EVENT0("cc", "EarlyOut_StaleBeginFrameMessage");
         return;
     }
 
     if (m_layerTreeHost->needsSharedContext() && !WebSharedGraphicsContext3D::haveCompositorThreadContext())
         WebSharedGraphicsContext3D::createCompositorThreadContext();
@@ skipping 87 matching lines @@
 
     m_layerTreeHost->commitComplete();
     m_layerTreeHost->didBeginFrame();
 }
 
 void CCThreadProxy::beginFrameCompleteOnImplThread(CCCompletionEvent* completion, CCTextureUpdateQueue* rawQueue)
 {
     scoped_ptr<CCTextureUpdateQueue> queue(rawQueue);
 
     TRACE_EVENT0("cc", "CCThreadProxy::beginFrameCompleteOnImplThread");
-    ASSERT(!m_commitCompletionEventOnImplThread);
-    ASSERT(isImplThread() && isMainThreadBlocked());
-    ASSERT(m_schedulerOnImplThread);
-    ASSERT(m_schedulerOnImplThread->commitPending());
+    DCHECK(!m_commitCompletionEventOnImplThread);
+    DCHECK(isImplThread() && isMainThreadBlocked());
+    DCHECK(m_schedulerOnImplThread);
+    DCHECK(m_schedulerOnImplThread->commitPending());
 
     if (!m_layerTreeHostImpl.get()) {
         TRACE_EVENT0("cc", "EarlyOut_NoLayerTree");
         completion->signal();
         return;
     }
 
     if (m_layerTreeHost->contentsTextureManager()->linkedEvictedBackingsExist()) {
         // Clear any uploads we were making to textures linked to evicted
         // resources
         queue->clearUploadsToEvictedResources();
         // Some textures in the layer tree are invalid. Kick off another commit
         // to fill them again.
         setNeedsCommitOnImplThread();
     }
 
     m_layerTreeHost->contentsTextureManager()->pushTexturePrioritiesToBackings();
 
     m_currentTextureUpdateControllerOnImplThread = CCTextureUpdateController::create(this, CCProxy::implThread(), queue.Pass(), m_layerTreeHostImpl->resourceProvider(), m_layerTreeHostImpl->resourceProvider()->textureUploader());
     m_currentTextureUpdateControllerOnImplThread->performMoreUpdates(
         m_schedulerOnImplThread->anticipatedDrawTime());
 
     m_commitCompletionEventOnImplThread = completion;
 }
 
 void CCThreadProxy::beginFrameAbortedOnImplThread()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::beginFrameAbortedOnImplThread");
-    ASSERT(isImplThread());
-    ASSERT(m_schedulerOnImplThread);
-    ASSERT(m_schedulerOnImplThread->commitPending());
+    DCHECK(isImplThread());
+    DCHECK(m_schedulerOnImplThread);
+    DCHECK(m_schedulerOnImplThread->commitPending());
 
     m_schedulerOnImplThread->beginFrameAborted();
 }
 
 void CCThreadProxy::scheduledActionCommit()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::scheduledActionCommit");
-    ASSERT(isImplThread());
-    ASSERT(m_commitCompletionEventOnImplThread);
-    ASSERT(m_currentTextureUpdateControllerOnImplThread);
+    DCHECK(isImplThread());
+    DCHECK(m_commitCompletionEventOnImplThread);
+    DCHECK(m_currentTextureUpdateControllerOnImplThread);
 
     // Complete all remaining texture updates.
     m_currentTextureUpdateControllerOnImplThread->finalize();
     m_currentTextureUpdateControllerOnImplThread.reset();
 
     // If there are linked evicted backings, these backings' resources may be put into the
     // impl tree, so we can't draw yet. Determine this before clearing all evicted backings.
     bool newImplTreeHasNoEvictedResources = !m_layerTreeHost->contentsTextureManager()->linkedEvictedBackingsExist();
 
     m_layerTreeHostImpl->beginCommit();
@@ skipping 11 matching lines @@
 
     m_commitCompletionEventOnImplThread->signal();
     m_commitCompletionEventOnImplThread = 0;
 
     // SetVisible kicks off the next scheduler action, so this must be last.
     m_schedulerOnImplThread->setVisible(m_layerTreeHostImpl->visible());
 }
 
 void CCThreadProxy::scheduledActionBeginContextRecreation()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_mainThreadProxy->postTask(createCCThreadTask(this, &CCThreadProxy::beginContextRecreation));
 }
 
 CCScheduledActionDrawAndSwapResult CCThreadProxy::scheduledActionDrawAndSwapInternal(bool forcedDraw)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::scheduledActionDrawAndSwap");
     CCScheduledActionDrawAndSwapResult result;
     result.didDraw = false;
     result.didSwap = false;
-    ASSERT(isImplThread());
-    ASSERT(m_layerTreeHostImpl.get());
+    DCHECK(isImplThread());
+    DCHECK(m_layerTreeHostImpl.get());
     if (!m_layerTreeHostImpl.get())
         return result;
 
-    ASSERT(m_layerTreeHostImpl->renderer());
+    DCHECK(m_layerTreeHostImpl->renderer());
     if (!m_layerTreeHostImpl->renderer())
         return result;
 
     // FIXME: compute the frame display time more intelligently
     double monotonicTime = monotonicallyIncreasingTime();
     double wallClockTime = currentTime();
 
     if (m_inputHandlerOnImplThread.get())
         m_inputHandlerOnImplThread->animate(monotonicTime);
     m_layerTreeHostImpl->animate(monotonicTime, wallClockTime);
@@ skipping 36 matching lines @@
     return result;
 }
 
 void CCThreadProxy::acquireLayerTextures()
 {
     // Called when the main thread needs to modify a layer texture that is used
     // directly by the compositor.
     // This method will block until the next compositor draw if there is a
     // previously committed frame that is still undrawn. This is necessary to
     // ensure that the main thread does not monopolize access to the textures.
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
 
     if (m_texturesAcquired)
         return;
 
     TRACE_EVENT0("cc", "CCThreadProxy::acquireLayerTextures");
     DebugScopedSetMainThreadBlocked mainThreadBlocked;
     CCCompletionEvent completion;
     CCProxy::implThread()->postTask(createCCThreadTask(this, &CCThreadProxy::acquireLayerTexturesForMainThreadOnImplThread, &completion));
     completion.wait(); // Block until it is safe to write to layer textures from the main thread.
 
     m_texturesAcquired = true;
 }
 
 void CCThreadProxy::acquireLayerTexturesForMainThreadOnImplThread(CCCompletionEvent* completion)
 {
-    ASSERT(isImplThread());
-    ASSERT(!m_textureAcquisitionCompletionEventOnImplThread);
+    DCHECK(isImplThread());
+    DCHECK(!m_textureAcquisitionCompletionEventOnImplThread);
 
     m_textureAcquisitionCompletionEventOnImplThread = completion;
     m_schedulerOnImplThread->setMainThreadNeedsLayerTextures();
 }
 
 void CCThreadProxy::scheduledActionAcquireLayerTexturesForMainThread()
 {
-    ASSERT(m_textureAcquisitionCompletionEventOnImplThread);
+    DCHECK(m_textureAcquisitionCompletionEventOnImplThread);
     m_textureAcquisitionCompletionEventOnImplThread->signal();
     m_textureAcquisitionCompletionEventOnImplThread = 0;
 }
 
 CCScheduledActionDrawAndSwapResult CCThreadProxy::scheduledActionDrawAndSwapIfPossible()
 {
     return scheduledActionDrawAndSwapInternal(false);
 }
 
 CCScheduledActionDrawAndSwapResult CCThreadProxy::scheduledActionDrawAndSwapForced()
 {
     return scheduledActionDrawAndSwapInternal(true);
 }
 
 void CCThreadProxy::didAnticipatedDrawTimeChange(base::TimeTicks time)
 {
     if (!m_currentTextureUpdateControllerOnImplThread)
         return;
 
     m_currentTextureUpdateControllerOnImplThread->performMoreUpdates(time);
 }
 
 void CCThreadProxy::readyToFinalizeTextureUpdates()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_schedulerOnImplThread->beginFrameComplete();
 }
 
 void CCThreadProxy::didCommitAndDrawFrame()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     if (!m_layerTreeHost)
         return;
     m_layerTreeHost->didCommitAndDrawFrame();
 }
 
 void CCThreadProxy::didCompleteSwapBuffers()
 {
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     if (!m_layerTreeHost)
         return;
     m_layerTreeHost->didCompleteSwapBuffers();
 }
 
 void CCThreadProxy::setAnimationEvents(CCAnimationEventsVector* passed_events, double wallClockTime)
 {
     scoped_ptr<CCAnimationEventsVector> events(make_scoped_ptr(passed_events));
 
     TRACE_EVENT0("cc", "CCThreadProxy::setAnimationEvents");
-    ASSERT(isMainThread());
+    DCHECK(isMainThread());
     if (!m_layerTreeHost)
         return;
     m_layerTreeHost->setAnimationEvents(events.Pass(), wallClockTime);
 }
 
 class CCThreadProxyContextRecreationTimer : public CCTimer, CCTimerClient {
 public:
     static scoped_ptr<CCThreadProxyContextRecreationTimer> create(CCThreadProxy* proxy) { return make_scoped_ptr(new CCThreadProxyContextRecreationTimer(proxy)); }
 
     virtual void onTimerFired() OVERRIDE
     {
         m_proxy->tryToRecreateContext();
     }
 
 private:
     explicit CCThreadProxyContextRecreationTimer(CCThreadProxy* proxy)
         : CCTimer(CCProxy::mainThread(), this)
         , m_proxy(proxy)
     {
     }
 
     CCThreadProxy* m_proxy;
 };
 
 void CCThreadProxy::beginContextRecreation()
 {
     TRACE_EVENT0("cc", "CCThreadProxy::beginContextRecreation");
-    ASSERT(isMainThread());
-    ASSERT(!m_contextRecreationTimer);
+    DCHECK(isMainThread());
+    DCHECK(!m_contextRecreationTimer);
     m_contextRecreationTimer = CCThreadProxyContextRecreationTimer::create(this);
     m_layerTreeHost->didLoseContext();
     m_contextRecreationTimer->startOneShot(contextRecreationTickRate);
 }
 
 void CCThreadProxy::tryToRecreateContext()
 {
-    ASSERT(isMainThread());
-    ASSERT(m_layerTreeHost);
+    DCHECK(isMainThread());
+    DCHECK(m_layerTreeHost);
     CCLayerTreeHost::RecreateResult result = m_layerTreeHost->recreateContext();
     if (result == CCLayerTreeHost::RecreateFailedButTryAgain)
         m_contextRecreationTimer->startOneShot(contextRecreationTickRate);
     else if (result == CCLayerTreeHost::RecreateSucceeded)
         m_contextRecreationTimer.reset();
 }
 
 void CCThreadProxy::initializeImplOnImplThread(CCCompletionEvent* completion, CCInputHandler* handler)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::initializeImplOnImplThread");
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_layerTreeHostImpl = m_layerTreeHost->createLayerTreeHostImpl(this);
     const base::TimeDelta displayRefreshInterval = base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond / 60);
     scoped_ptr<CCFrameRateController> frameRateController;
     if (m_renderVSyncEnabled)
         frameRateController.reset(new CCFrameRateController(CCDelayBasedTimeSource::create(displayRefreshInterval, CCProxy::implThread())));
     else
         frameRateController.reset(new CCFrameRateController(CCProxy::implThread()));
     m_schedulerOnImplThread = CCScheduler::create(this, frameRateController.Pass());
     m_schedulerOnImplThread->setVisible(m_layerTreeHostImpl->visible());
 
     m_inputHandlerOnImplThread = scoped_ptr<CCInputHandler>(handler);
     if (m_inputHandlerOnImplThread.get())
         m_inputHandlerOnImplThread->bindToClient(m_layerTreeHostImpl.get());
 
     completion->signal();
 }
 
 void CCThreadProxy::initializeContextOnImplThread(CCGraphicsContext* context)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::initializeContextOnImplThread");
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_contextBeforeInitializationOnImplThread = scoped_ptr<CCGraphicsContext>(context).Pass();
 }
 
 void CCThreadProxy::initializeRendererOnImplThread(CCCompletionEvent* completion, bool* initializeSucceeded, RendererCapabilities* capabilities)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::initializeRendererOnImplThread");
-    ASSERT(isImplThread());
-    ASSERT(m_contextBeforeInitializationOnImplThread.get());
+    DCHECK(isImplThread());
+    DCHECK(m_contextBeforeInitializationOnImplThread.get());
     *initializeSucceeded = m_layerTreeHostImpl->initializeRenderer(m_contextBeforeInitializationOnImplThread.Pass());
     if (*initializeSucceeded) {
         *capabilities = m_layerTreeHostImpl->rendererCapabilities();
         m_schedulerOnImplThread->setSwapBuffersCompleteSupported(
                 capabilities->usingSwapCompleteCallback);
     }
 
     completion->signal();
 }
 
 void CCThreadProxy::layerTreeHostClosedOnImplThread(CCCompletionEvent* completion)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::layerTreeHostClosedOnImplThread");
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_layerTreeHost->deleteContentsTexturesOnImplThread(m_layerTreeHostImpl->resourceProvider());
     m_inputHandlerOnImplThread.reset();
     m_layerTreeHostImpl.reset();
     m_schedulerOnImplThread.reset();
     completion->signal();
 }
 
 void CCThreadProxy::setFullRootLayerDamageOnImplThread()
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_layerTreeHostImpl->setFullRootLayerDamage();
 }
 
 size_t CCThreadProxy::maxPartialTextureUpdates() const
 {
     return CCTextureUpdateController::maxPartialTextureUpdates();
 }
 
 void CCThreadProxy::recreateContextOnImplThread(CCCompletionEvent* completion, CCGraphicsContext* contextPtr, bool* recreateSucceeded, RendererCapabilities* capabilities)
 {
     TRACE_EVENT0("cc", "CCThreadProxy::recreateContextOnImplThread");
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_layerTreeHost->deleteContentsTexturesOnImplThread(m_layerTreeHostImpl->resourceProvider());
     *recreateSucceeded = m_layerTreeHostImpl->initializeRenderer(scoped_ptr<CCGraphicsContext>(contextPtr).Pass());
     if (*recreateSucceeded) {
         *capabilities = m_layerTreeHostImpl->rendererCapabilities();
         m_schedulerOnImplThread->didRecreateContext();
     }
     completion->signal();
 }
 
 void CCThreadProxy::renderingStatsOnImplThread(CCCompletionEvent* completion, CCRenderingStats* stats)
 {
-    ASSERT(isImplThread());
+    DCHECK(isImplThread());
     m_layerTreeHostImpl->renderingStats(stats);
     completion->signal();
 }
 
 CCThreadProxy::BeginFrameAndCommitState::BeginFrameAndCommitState()
     : monotonicFrameBeginTime(0)
 {
 }
 
 CCThreadProxy::BeginFrameAndCommitState::~BeginFrameAndCommitState()
 {
 }
 
 }  // namespace cc