Make async waiter explicit MojoGLES2CreateContext param

mojo/gles2/gles2_support_impl.h

 // Copyright 2014 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 MOJO_GLES2_GLES2_SUPPORT_IMPL_H_
 #define MOJO_GLES2_GLES2_SUPPORT_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "mojo/gles2/gles2_impl_export.h"
 #include "mojo/public/gles2/gles2_private.h"
 
 namespace mojo {
 namespace gles2 {
 
 class MOJO_GLES2_IMPL_EXPORT GLES2SupportImpl : public GLES2Support {
  public:
   virtual ~GLES2SupportImpl();
 
   static void Init();
 
-  virtual void Initialize(const MojoAsyncWaiter* async_waiter) OVERRIDE;
-  virtual void Terminate() OVERRIDE;
   virtual MojoGLES2Context CreateContext(
       MessagePipeHandle handle,
       MojoGLES2ContextLost lost_callback,
-      void* closure) OVERRIDE;
+      void* closure,
+      const MojoAsyncWaiter* async_waiter) OVERRIDE;
   virtual void DestroyContext(MojoGLES2Context context) OVERRIDE;
   virtual void MakeCurrent(MojoGLES2Context context) OVERRIDE;
   virtual void SwapBuffers() OVERRIDE;
   virtual void* GetGLES2Interface(MojoGLES2Context context) OVERRIDE;
   virtual void* GetContextSupport(MojoGLES2Context context) OVERRIDE;
   virtual GLES2Interface* GetGLES2InterfaceForCurrentContext() OVERRIDE;
 
  private:
   GLES2SupportImpl();
-
-  const MojoAsyncWaiter* async_waiter_;
 };
 
 }  // namespace gles2
 }  // namespace mojo
 
 #endif  // MOJO_GLES2_GLES2_SUPPORT_IMPL_H_