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

services/gfx/compositor/compositor_impl.h

 // 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.
 
 #ifndef SERVICES_GFX_COMPOSITOR_COMPOSITOR_IMPL_H_
 #define SERVICES_GFX_COMPOSITOR_COMPOSITOR_IMPL_H_
 
 #include "base/macros.h"
 #include "mojo/common/strong_binding_set.h"
 #include "mojo/services/gfx/composition/interfaces/compositor.mojom.h"
 #include "services/gfx/compositor/compositor_engine.h"
 
 namespace compositor {
 
 // Compositor interface implementation.
 class CompositorImpl : public mojo::gfx::composition::Compositor {
  public:
   explicit CompositorImpl(CompositorEngine* engine);
   ~CompositorImpl() override;
 
  private:
   // |Compositor|:
   void CreateScene(
       mojo::InterfaceRequest<mojo::gfx::composition::Scene> scene_request,
       const mojo::String& label,
       const CreateSceneCallback& callback) override;
   void CreateRenderer(
-      mojo::ContextProviderPtr context_provider,
+      mojo::InterfaceHandle<mojo::ContextProvider> context_provider,
       mojo::InterfaceRequest<mojo::gfx::composition::Renderer> renderer_request,
       const mojo::String& label) override;
 
   CompositorEngine* engine_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 };
 
 }  // namespace compositor
 
 #endif  // SERVICES_GFX_COMPOSITOR_COMPOSITOR_IMPL_H_