Revert of cc: Implement shared worker contexts.

content/browser/android/in_process/synchronous_compositor_output_surface.cc

Index: content/browser/android/in_process/synchronous_compositor_output_surface.cc
diff --git a/content/browser/android/in_process/synchronous_compositor_output_surface.cc b/content/browser/android/in_process/synchronous_compositor_output_surface.cc
index f03f992d83d4a289296527d774ef66aa65783037..85c7bcb3c39832eadbcc9d14bddee0263d070b1a 100644
--- a/content/browser/android/in_process/synchronous_compositor_output_surface.cc
+++ b/content/browser/android/in_process/synchronous_compositor_output_surface.cc
@@ -83,6 +83,11 @@
 }
 
 SynchronousCompositorOutputSurface::~SynchronousCompositorOutputSurface() {
+  DCHECK(CalledOnValidThread());
+  if (registered_) {
+    SynchronousCompositorRegistry::GetInstance()->UnregisterOutputSurface(
+        routing_id_, this);
+  }
 }
 
 bool SynchronousCompositorOutputSurface::BindToClient(
@@ -98,15 +103,6 @@
   registered_ = true;
 
   return true;
-}
-
-void SynchronousCompositorOutputSurface::DetachFromClient() {
-  DCHECK(CalledOnValidThread());
-  if (registered_) {
-    SynchronousCompositorRegistry::GetInstance()->UnregisterOutputSurface(
-        routing_id_, this);
-  }
-  cc::OutputSurface::DetachFromClient();
 }
 
 void SynchronousCompositorOutputSurface::SetCompositor(