Revert of cc: Use worker context for one-copy tile initialization.

content/browser/compositor/offscreen_browser_compositor_output_surface.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include "base/cancelable_callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/compositor/browser_compositor_output_surface.h"
 
 namespace ui {
 class CompositorVSyncManager;
 }
 
 namespace content {
 class CommandBufferProxyImpl;
 class ReflectorTexture;
 
 class OffscreenBrowserCompositorOutputSurface
     : public BrowserCompositorOutputSurface {
  public:
   OffscreenBrowserCompositorOutputSurface(
       const scoped_refptr<ContextProviderCommandBuffer>& context,
-      const scoped_refptr<ContextProviderCommandBuffer>& worker_context,
       const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
       scoped_ptr<BrowserCompositorOverlayCandidateValidator>
           overlay_candidate_validator);
 
   ~OffscreenBrowserCompositorOutputSurface() override;
 
  protected:
   // cc::OutputSurface:
   void EnsureBackbuffer() override;
   void DiscardBackbuffer() override;
@@ skipping 17 matching lines @@
   base::WeakPtrFactory<OffscreenBrowserCompositorOutputSurface>
       weak_ptr_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(OffscreenBrowserCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_