Add FBO support in Android WebView

gpu/command_buffer/service/in_process_command_buffer.h

 // Copyright 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 GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/gpu_export.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gl/gl_surface.h"
 #include "ui/gl/gpu_preference.h"
 
 namespace gfx {
 class GLContext;
 class GLImage;
 class GLSurface;
 class Size;
 }
 
 namespace gpu {
@@ skipping 20 matching lines @@
   // The callback will be called from different client threads. After the
   // callback is issued, the client is expected to eventually call
   // ProcessGpuWorkOnCurrentThread(). The latter cannot be called from different
   // threads.
   // The callback needs to be set before any context is created.
   static void SetScheduleCallback(const base::Closure& callback);
   static void ProcessGpuWorkOnCurrentThread();
 
   static void EnableVirtualizedContext();
 
-  bool Initialize(bool is_offscreen,
+  // If |surface| is not NULL, use it directly. Otherwise create a new
+  // GLSurface.
+  bool Initialize(scoped_refptr<gfx::GLSurface> surface,
+                  bool is_offscreen,
                   bool share_resources,
                   gfx::AcceleratedWidget window,
                   const gfx::Size& size,
                   const char* allowed_extensions,
                   const std::vector<int32>& attribs,
                   gfx::GpuPreference gpu_preference,
                   const base::Closure& context_lost_callback,
                   unsigned int share_group_id);
   void Destroy();
   void SignalSyncPoint(unsigned sync_point,
@@ skipping 75 matching lines @@
   base::Lock command_buffer_lock_;
   base::WaitableEvent flush_event_;
   scoped_ptr<SchedulerClient> queue_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessCommandBuffer);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_IN_PROCESS_COMMAND_BUFFER_H_