cc: Redraw incomplete frames when new texture uploads finish

cc/layer_tree_host_impl.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/layer_tree_host_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
@@ skipping 819 matching lines @@
 const RendererCapabilities& LayerTreeHostImpl::rendererCapabilities() const
 {
     return m_renderer->capabilities();
 }
 
 bool LayerTreeHostImpl::swapBuffers()
 {
     DCHECK(m_renderer);
 
     m_fpsCounter->markEndOfFrame();
-    return m_renderer->swapBuffers();
+    bool result = m_renderer->swapBuffers();
+
+    if (!activeTree()->AreVisibleResourcesReady()) {
+      m_client->setNeedsRedrawOnVisibleTextureUploadOnImplThread();
+    }
+
+    return result;
 }
 
 const gfx::Size& LayerTreeHostImpl::deviceViewportSize() const
 {
     return m_deviceViewportSize;
 }
 
 const LayerTreeSettings& LayerTreeHostImpl::settings() const
 {
     return m_settings;
@@ skipping 48 matching lines @@
 }
 
 void LayerTreeHostImpl::createPendingTree()
 {
     CHECK(!m_pendingTree);
     m_pendingTree = LayerTreeImpl::create(this);
     m_client->onCanDrawStateChanged(canDraw());
     m_client->onHasPendingTreeStateChanged(pendingTree());
 }
 
-void LayerTreeHostImpl::checkForCompletedSetPixels()
+bool LayerTreeHostImpl::checkForCompletedSetPixels()
 {
     if (m_tileManager)
-        m_tileManager->CheckForCompletedSetPixels();
+        return m_tileManager->CheckForCompletedSetPixels();
+    return false;
 }
 
 void LayerTreeHostImpl::activatePendingTreeIfNeeded()
 {
     if (!pendingTree())
         return;
 
     checkForCompletedSetPixels();
 
     // It's always fine to activate to an empty tree.  Otherwise, only
@@ skipping 716 matching lines @@
 }
 
 skia::RefPtr<SkPicture> LayerTreeHostImpl::capturePicture()
 {
     LayerTreeImpl* tree = pendingTree() ? pendingTree() : activeTree();
     LayerImpl* layer = getNonCompositedContentLayerRecursive(tree->RootLayer());
     return layer ? layer->getPicture() : skia::RefPtr<SkPicture>();
 }
 
 }  // namespace cc