cc: Add threaded GPU rasterization.

cc/output/output_surface.h

 // Copyright 2012 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 CC_OUTPUT_OUTPUT_SURFACE_H_
 #define CC_OUTPUT_OUTPUT_SURFACE_H_
 
 #include <deque>
 
 #include "base/basictypes.h"
@@ skipping 139 matching lines @@
 
   void DidLoseOutputSurface();
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy);
 
  protected:
   OutputSurfaceClient* client_;
 
   // Synchronously initialize context3d and enter hardware mode.
   // This can only supported in threaded compositing mode.
   bool InitializeAndSetContext3d(
-      scoped_refptr<ContextProvider> context_provider);
+      scoped_refptr<ContextProvider> context_provider,
+      scoped_refptr<ContextProvider> worker_context_provider);
   void ReleaseGL();
 
   void PostSwapBuffersComplete();
 
   struct OutputSurface::Capabilities capabilities_;
   scoped_refptr<ContextProvider> context_provider_;
   scoped_refptr<ContextProvider> worker_context_provider_;
   scoped_ptr<SoftwareOutputDevice> software_device_;
   scoped_ptr<OverlayCandidateValidator> overlay_candidate_validator_;
   gfx::Size surface_size_;
@@ skipping 20 matching lines @@
   bool external_stencil_test_enabled_;
 
   base::WeakPtrFactory<OutputSurface> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OUTPUT_SURFACE_H_