Remove CompositorThread dependency on WebThread

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 85cc17f6923e4cdeca090465f4cdcf5dfceffa1b..545dba014b452775d9ea9d9fd3e3b43b74f92ff2 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -324,7 +324,6 @@ void RenderThreadImpl::Init() {
   idle_notifications_to_skip_ = 0;
   should_send_focus_ipcs_ = true;
   short_circuit_size_updates_ = false;
-  compositor_initialized_ = false;
 
   appcache_dispatcher_.reset(new AppCacheDispatcher(Get()));
   dom_storage_dispatcher_.reset(new DomStorageDispatcher());
@@ -411,10 +410,6 @@ RenderThreadImpl::~RenderThreadImpl() {
     compositor_output_surface_filter_ = NULL;
   }
 
-  if (compositor_initialized_) {
-    WebKit::Platform::current()->compositorSupport()->shutdown();
-    compositor_initialized_ = false;
-  }
   if (compositor_thread_.get()) {
     RemoveFilter(compositor_thread_->GetMessageFilter());
     compositor_thread_.reset();
@@ -601,26 +596,22 @@ void RenderThreadImpl::EnsureWebKitInitialized() {
   WebKit::setIDBFactory(
       webkit_platform_support_.get()->idbFactory());
 
-  WebKit::WebCompositorSupport* compositor_support =
-      WebKit::Platform::current()->compositorSupport();
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
   bool enable = command_line.HasSwitch(switches::kEnableThreadedCompositing);
   if (enable) {
     compositor_thread_.reset(new CompositorThread(this));
     AddFilter(compositor_thread_->GetMessageFilter());
-    compositor_support->initialize(compositor_thread_->GetWebThread());
-  } else {
-    compositor_support->initialize(NULL);
   }
-  compositor_initialized_ = true;
 
-  MessageLoop* output_surface_loop = enable ?
-      compositor_thread_->message_loop() :
-      MessageLoop::current();
+  base::MessageLoopProxy* output_surface_loop;
+  if (enable)
+    output_surface_loop = compositor_thread_->message_loop_proxy();
+  else
+    output_surface_loop = base::MessageLoopProxy::current();
 
-  compositor_output_surface_filter_ = CompositorOutputSurface::CreateFilter(
-      output_surface_loop->message_loop_proxy());
+  compositor_output_surface_filter_ =
+      CompositorOutputSurface::CreateFilter(output_surface_loop);
   AddFilter(compositor_output_surface_filter_.get());
 
   WebScriptController::enableV8SingleThreadMode();
@@ -887,7 +878,7 @@ void RenderThreadImpl::OnGpuVDAContextLoss() {
   if (!self->gpu_vda_context3d_.get())
     return;
   if (self->compositor_thread()) {
-    self->compositor_thread()->GetWebThread()->message_loop()->DeleteSoon(
+    self->compositor_thread()->message_loop_proxy()->DeleteSoon(
         FROM_HERE, self->gpu_vda_context3d_.release());
   } else {
     self->gpu_vda_context3d_.reset();