Revert of Read compositor VSync information from platform, when possible

content/browser/compositor/browser_compositor_output_surface.cc

Index: content/browser/compositor/browser_compositor_output_surface.cc
diff --git a/content/browser/compositor/browser_compositor_output_surface.cc b/content/browser/compositor/browser_compositor_output_surface.cc
index ff09ab7f5a8e4cafdc8759e5944d9133e4ff3eb4..30ff48551d9b3022a88a2458c379e4347fdd89b2 100644
--- a/content/browser/compositor/browser_compositor_output_surface.cc
+++ b/content/browser/compositor/browser_compositor_output_surface.cc
@@ -7,9 +7,11 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "base/strings/string_number_conversions.h"
 #include "content/browser/compositor/reflector_impl.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
+#include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_switches.h"
 
 namespace content {
@@ -18,11 +20,13 @@
     const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
     int surface_id,
     IDMap<BrowserCompositorOutputSurface>* output_surface_map,
-    const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
+    base::MessageLoopProxy* compositor_message_loop,
+    base::WeakPtr<ui::Compositor> compositor)
     : OutputSurface(context_provider),
       surface_id_(surface_id),
       output_surface_map_(output_surface_map),
-      vsync_manager_(vsync_manager) {
+      compositor_message_loop_(compositor_message_loop),
+      compositor_(compositor) {
   Initialize();
 }
 
@@ -30,11 +34,13 @@
     scoped_ptr<cc::SoftwareOutputDevice> software_device,
     int surface_id,
     IDMap<BrowserCompositorOutputSurface>* output_surface_map,
-    const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager)
+    base::MessageLoopProxy* compositor_message_loop,
+    base::WeakPtr<ui::Compositor> compositor)
     : OutputSurface(software_device.Pass()),
       surface_id_(surface_id),
       output_surface_map_(output_surface_map),
-      vsync_manager_(vsync_manager) {
+      compositor_message_loop_(compositor_message_loop),
+      compositor_(compositor) {
   Initialize();
 }
 
@@ -43,7 +49,6 @@
   if (!HasClient())
     return;
   output_surface_map_->Remove(surface_id_);
-  vsync_manager_->RemoveObserver(this);
 }
 
 void BrowserCompositorOutputSurface::Initialize() {
@@ -72,7 +77,6 @@
   output_surface_map_->AddWithID(this, surface_id_);
   if (reflector_)
     reflector_->OnSourceSurfaceReady(surface_id_);
-  vsync_manager_->AddObserver(this);
   return true;
 }
 
@@ -88,15 +92,11 @@
     base::TimeDelta interval) {
   DCHECK(CalledOnValidThread());
   DCHECK(HasClient());
-  CommitVSyncParameters(timebase, interval);
-}
-
-void BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu(
-    base::TimeTicks timebase,
-    base::TimeDelta interval) {
-  DCHECK(CalledOnValidThread());
-  DCHECK(HasClient());
-  vsync_manager_->UpdateVSyncParameters(timebase, interval);
+  OnVSyncParametersChanged(timebase, interval);
+  compositor_message_loop_->PostTask(
+      FROM_HERE,
+      base::Bind(&ui::Compositor::OnUpdateVSyncParameters,
+                 compositor_, timebase, interval));
 }
 
 void BrowserCompositorOutputSurface::SetReflector(ReflectorImpl* reflector) {