Disable force compositing mode when disabling compositing, re-enter in DoDeferredUpdate

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/bind.h"
@@ skipping 5700 matching lines @@
 bool RenderViewImpl::SupportsAsynchronousSwapBuffers() {
   // Contexts using the command buffer support asynchronous swapbuffers.
   // See RenderViewImpl::createOutputSurface().
   if (WebWidgetHandlesCompositorScheduling() ||
       CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessWebGL))
     return false;
 
   return true;
 }
 
+bool RenderViewImpl::ForceCompositingModeEnabled() {
+  return webkit_preferences_.force_compositing_mode;
+}
+
 void RenderViewImpl::OnSetFocus(bool enable) {
   RenderWidget::OnSetFocus(enable);
 
   if (webview() && webview()->isActive()) {
     // Notify all NPAPI plugins.
     std::set<WebPluginDelegateProxy*>::iterator plugin_it;
     for (plugin_it = plugin_delegates_.begin();
          plugin_it != plugin_delegates_.end(); ++plugin_it) {
 #if defined(OS_MACOSX)
       // RenderWidget's call to setFocus can cause the underlying webview's
@@ skipping 607 matching lines @@
 }
 #endif
 
 void RenderViewImpl::OnReleaseDisambiguationPopupDIB(
     TransportDIB::Handle dib_handle) {
   TransportDIB* dib = TransportDIB::CreateWithHandle(dib_handle);
   RenderProcess::current()->ReleaseTransportDIB(dib);
 }
 
 }  // namespace content