Mojo: Implement support for |Foo&| mojom syntax

mojo/examples/sample_app/sample_app.cc

 // 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.
 
 #include <stdio.h>
 #include <string>
 
 #include "mojo/examples/sample_app/gles2_client_impl.h"
 #include "mojo/public/cpp/application/application.h"
 #include "mojo/public/cpp/gles2/gles2.h"
@@ skipping 20 matching lines @@
     viewport_.set_client(this);
 
     RectPtr rect(Rect::New());
     rect->x = 10;
     rect->y = 10;
     rect->width = 800;
     rect->height = 600;
     viewport_->Create(rect.Pass());
     viewport_->Show();
 
-    MessagePipe gles2_pipe;
-    viewport_->CreateGLES2Context(gles2_pipe.handle0.Pass());
-    gles2_client_.reset(new GLES2ClientImpl(gles2_pipe.handle1.Pass()));
+    CommandBufferPtr command_buffer;
+    viewport_->CreateGLES2Context(Get(&command_buffer));
+    gles2_client_.reset(new GLES2ClientImpl(command_buffer.Pass()));
   }
 
   virtual void OnCreated() MOJO_OVERRIDE {
   }
 
   virtual void OnDestroyed() MOJO_OVERRIDE {
     RunLoop::current()->Quit();
   }
 
   virtual void OnBoundsChanged(RectPtr bounds) MOJO_OVERRIDE {
@@ skipping 21 matching lines @@
 };
 
 }  // namespace examples
 
 // static
 Application* Application::Create() {
   return new examples::SampleApp();
 }
 
 }  // namespace mojo