RendererGLContext supports reparenting a GL context.

gpu/command_buffer/service/gpu_scheduler.h

 // Copyright (c) 2011 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_GPU_SCHEDULER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GPU_SCHEDULER_H_
 
 #include <queue>
 #include <vector>
 
@@ skipping 45 matching lines @@
                int commands_per_update);
 
   virtual ~GpuScheduler();
 
   // Perform platform specific and common initialization.
   bool Initialize(gfx::PluginWindowHandle hwnd,
                   const gfx::Size& size,
                   const gles2::DisallowedExtensions& disallowed_extensions,
                   const char* allowed_extensions,
                   const std::vector<int32>& attribs,
-                  GpuScheduler* parent,
-                  uint32 parent_texture_id,
                   gfx::GLShareGroup* share_group);
 
   void Destroy();
   void DestroyCommon();
 
+  bool SetParent(GpuScheduler* parent_scheduler, uint32 parent_texture_id);
+
   void PutChanged(bool sync);
 
   // Sets whether commands should be processed by this scheduler. Setting to
   // false unschedules. Setting to true reschedules. Whether or not the
   // scheduler is currently scheduled is "reference counted". Every call with
   // false must eventually be paired by a call with true.
   void SetScheduled(bool is_scheduled);
 
   // Returns whether the scheduler is currently scheduled to process commands.
   bool IsScheduled();
@@ skipping 62 matching lines @@
   gles2::GLES2Decoder* decoder() const { return decoder_.get(); }
 
  protected:
   // Perform common initialization. Takes ownership of GLSurface and GLContext.
   bool InitializeCommon(
       const scoped_refptr<gfx::GLSurface>& surface,
       const scoped_refptr<gfx::GLContext>& context,
       const gfx::Size& size,
       const gles2::DisallowedExtensions& disallowed_extensions,
       const char* allowed_extensions,
-      const std::vector<int32>& attribs,
-      gles2::GLES2Decoder* parent_decoder,
-      uint32 parent_texture_id);
+      const std::vector<int32>& attribs);
 
 
  private:
   // Helper which causes a call to ProcessCommands to be scheduled later.
   void ScheduleProcessCommands();
 
   // Called via a callback just before we are supposed to call the
   // user's resize callback.
   void WillResize(gfx::Size size);
 
@@ skipping 25 matching lines @@
 
   ScopedRunnableMethodFactory<GpuScheduler> method_factory_;
   scoped_ptr<Callback1<gfx::Size>::Type> wrapped_resize_callback_;
   scoped_ptr<Callback0::Type> wrapped_swap_buffers_callback_;
   scoped_ptr<Callback0::Type> command_processed_callback_;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GPU_SCHEDULER_H_