Fall back to software mode if Aura can't create a GL context

content/browser/aura/gpu_process_transport_factory.h

 // Copyright (c) 2013 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_AURA_GPU_PROCESS_TRANSPORT_FACTORY_H_
 #define CONTENT_BROWSER_AURA_GPU_PROCESS_TRANSPORT_FACTORY_H_
 
 #include <map>
 
 #include "base/id_map.h"
@@ skipping 18 matching lines @@
  public:
   GpuProcessTransportFactory();
 
   virtual ~GpuProcessTransportFactory();
 
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
   CreateOffscreenCommandBufferContext();
 
   // ui::ContextFactory implementation.
   virtual scoped_ptr<cc::OutputSurface> CreateOutputSurface(
-      ui::Compositor* compositor) OVERRIDE;
+      ui::Compositor* compositor, bool software_fallback) OVERRIDE;
   virtual scoped_refptr<ui::Reflector> CreateReflector(
       ui::Compositor* source,
       ui::Layer* target) OVERRIDE;
   virtual void RemoveReflector(
       scoped_refptr<ui::Reflector> reflector) OVERRIDE;
   virtual void RemoveCompositor(ui::Compositor* compositor) OVERRIDE;
   virtual scoped_refptr<cc::ContextProvider>
       OffscreenCompositorContextProvider() OVERRIDE;
   virtual scoped_refptr<cc::ContextProvider>
       SharedMainThreadContextProvider() OVERRIDE;
@@ skipping 40 matching lines @@
   IDMap<BrowserCompositorOutputSurface> output_surface_map_;
 
   scoped_refptr<BrowserCompositorOutputSurfaceProxy> output_surface_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuProcessTransportFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_AURA_GPU_PROCESS_TRANSPORT_FACTORY_H_