Privatize StrongBinding lifetime management

services/ui/gpu/display_compositor/display_compositor_impl.h

 // Copyright 2016 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_UI_GPU_DISPLAY_COMPOSITOR_DISPLAY_COMPOSITOR_IMPL_H_
 #define SERVICES_UI_GPU_DISPLAY_COMPOSITOR_DISPLAY_COMPOSITOR_IMPL_H_
 
-#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/ui/public/interfaces/gpu/display_compositor.mojom.h"
 #include "services/ui/public/interfaces/gpu/display_compositor_host.mojom.h"
 
 namespace ui {
 namespace gpu {
 
 class DisplayCompositorImpl : public mojom::DisplayCompositor {
  public:
-  explicit DisplayCompositorImpl(
-      mojo::InterfaceRequest<mojom::DisplayCompositor> request);
+  DisplayCompositorImpl();
   ~DisplayCompositorImpl() override;
 
   // mojom::DisplayCompositor implementation.
   void CreateDisplay(int accelerated_widget,
                      mojo::InterfaceRequest<mojom::Display> display,
                      mojom::DisplayHostPtr host,
                      mojo::InterfaceRequest<mojom::CompositorFrameSink> sink,
                      mojom::CompositorFrameSinkClientPtr client) override;
 
  private:
-  mojo::StrongBinding<mojom::DisplayCompositor> binding_;
-
   DISALLOW_COPY_AND_ASSIGN(DisplayCompositorImpl);
 };
 
 }  // namespace gpu
 }  // namespace ui
 
 #endif  // SERVICES_UI_GPU_DISPLAY_COMPOSITOR_DISPLAY_COMPOSITOR_IMPL_H_