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

cc/CCSingleThreadProxy.cpp

Index: cc/CCSingleThreadProxy.cpp
diff --git a/cc/CCSingleThreadProxy.cpp b/cc/CCSingleThreadProxy.cpp
index 0a52d64ba10f336e45e03085dc9fc46dd5f0e0ca..47f01ebfd1198673747470f676f887c184019b35 100644
--- a/cc/CCSingleThreadProxy.cpp
+++ b/cc/CCSingleThreadProxy.cpp
@@ -187,13 +187,7 @@ void CCSingleThreadProxy::doCommit(CCTextureUpdateQueue& queue)
 
         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.
-        while (queue.hasMoreUpdates())
-            CCTextureUpdateController::updateTextures(m_layerTreeHostImpl->resourceProvider(), m_layerTreeHostImpl->renderer()->textureCopier(), m_layerTreeHostImpl->renderer()->textureUploader(), &queue, maxPartialTextureUpdates());
+        CCTextureUpdateController::updateTextures(m_layerTreeHostImpl->resourceProvider(), m_layerTreeHostImpl->renderer()->textureCopier(), m_layerTreeHostImpl->renderer()->textureUploader(), &queue);
 
         m_layerTreeHost->finishCommitOnImplThread(m_layerTreeHostImpl.get());