Remove offscreen compositor contexts.

ui/compositor/test/in_process_context_factory.h

Index: ui/compositor/test/in_process_context_factory.h
diff --git a/ui/compositor/test/in_process_context_factory.h b/ui/compositor/test/in_process_context_factory.h
index 49d15c28c746b1a078cf82ae82f6f2334f220109..ae44c94be4f3faaacaab1c13cf4131798c853585 100644
--- a/ui/compositor/test/in_process_context_factory.h
+++ b/ui/compositor/test/in_process_context_factory.h
@@ -30,8 +30,6 @@ class InProcessContextFactory : public ContextFactory {
       Layer* mirroring_layer) OVERRIDE;
   virtual void RemoveReflector(scoped_refptr<Reflector> reflector) OVERRIDE;
 
-  virtual scoped_refptr<cc::ContextProvider>
-      OffscreenCompositorContextProvider() OVERRIDE;
   virtual scoped_refptr<cc::ContextProvider> SharedMainThreadContextProvider()
       OVERRIDE;
   virtual void RemoveCompositor(Compositor* compositor) OVERRIDE;
@@ -39,8 +37,6 @@ class InProcessContextFactory : public ContextFactory {
 
  private:
   scoped_refptr<webkit::gpu::ContextProviderInProcess>
-      offscreen_compositor_contexts_;
-  scoped_refptr<webkit::gpu::ContextProviderInProcess>
       shared_main_thread_contexts_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessContextFactory);