cc: Only use upload throttling when performing full texture uploads.

cc/CCSingleThreadProxy.cpp

 // 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 "CCGraphicsContext.h"
@@ skipping 169 matching lines @@
     ASSERT(CCProxy::isMainThread());
     // Commit immediately
     {
         DebugScopedSetMainThreadBlocked mainThreadBlocked;
         DebugScopedSetImplThread impl;
 
         m_layerTreeHostImpl->beginCommit();
 
         m_layerTreeHost->beginCommitOnImplThread(m_layerTreeHostImpl.get());
 
-        // CCTextureUpdateController::updateTextures is non-blocking and will
-        // return without updating any textures if the uploader is busy. This
-        // shouldn't be a problem here as the throttled uploader isn't used in
-        // single thread mode. For correctness, loop until no more updates are
-        // pending.
-        CCResourceProvider* resourceProvider = m_layerTreeHostImpl->resourceProvider();
-        while (queue.hasMoreUpdates())
-            CCTextureUpdateController::updateTextures(resourceProvider, resourceProvider->textureUploader(), &queue, maxPartialTextureUpdates());
+        CCTextureUpdateController::updateTextures(m_layerTreeHostImpl->resourceProvider(), m_layerTreeHostImpl->resourceProvider()->textureUploader(), &queue);
 
         m_layerTreeHost->finishCommitOnImplThread(m_layerTreeHostImpl.get());
 
         m_layerTreeHostImpl->commitComplete();
 
 #if !ASSERT_DISABLED
         // In the single-threaded case, the scroll deltas should never be
         // touched on the impl layer tree.
         OwnPtr<CCScrollAndScaleSet> scrollInfo = m_layerTreeHostImpl->processScrollDeltas();
         ASSERT(!scrollInfo->scrolls.size());
@@ skipping 126 matching lines @@
 
 void CCSingleThreadProxy::didSwapFrame()
 {
     if (m_nextFrameIsNewlyCommittedFrame) {
         m_nextFrameIsNewlyCommittedFrame = false;
         m_layerTreeHost->didCommitAndDrawFrame();
     }
 }
 
 }