Mojo C++ bindings: Generate InterfaceHandle<> instead of InterfacePtr<>.

services/gfx/compositor/compositor_impl.cc

 // Copyright 2015 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 "services/gfx/compositor/compositor_impl.h"
 
+#include <utility>
+
 #include "services/gfx/compositor/scene_impl.h"
 
 namespace compositor {
 
 CompositorImpl::CompositorImpl(CompositorEngine* engine) : engine_(engine) {}
 
 CompositorImpl::~CompositorImpl() {}
 
 void CompositorImpl::CreateScene(
     mojo::InterfaceRequest<mojo::gfx::composition::Scene> scene_request,
     const mojo::String& label,
     const CreateSceneCallback& callback) {
   mojo::gfx::composition::SceneTokenPtr scene_token =
       engine_->CreateScene(scene_request.Pass(), label);
   callback.Run(scene_token.Pass());
 }
 
 void CompositorImpl::CreateRenderer(
-    mojo::ContextProviderPtr context_provider,
+    mojo::InterfaceHandle<mojo::ContextProvider> context_provider,
     mojo::InterfaceRequest<mojo::gfx::composition::Renderer> renderer_request,
     const mojo::String& label) {
-  engine_->CreateRenderer(context_provider.Pass(), renderer_request.Pass(),
-                          label);
+  engine_->CreateRenderer(
+      mojo::ContextProviderPtr::Create(std::move(context_provider)),
+      renderer_request.Pass(), label);
 }
 
 }  // namespace compositor