Privatize StrongBinding lifetime management

content/browser/renderer_host/offscreen_canvas_frame_receiver_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/offscreen_canvas_frame_receiver_impl.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/compositor/surface_utils.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace content {
 
+OffscreenCanvasFrameReceiverImpl::OffscreenCanvasFrameReceiverImpl() {}
+
+OffscreenCanvasFrameReceiverImpl::~OffscreenCanvasFrameReceiverImpl() {}
+
 // static
 void OffscreenCanvasFrameReceiverImpl::Create(
-    mojo::InterfaceRequest<blink::mojom::OffscreenCanvasFrameReceiver>
-        request) {
-  // |binding_| will take ownership of OffscreenCanvasFrameReceiverImpl
-  new OffscreenCanvasFrameReceiverImpl(std::move(request));
+    blink::mojom::OffscreenCanvasFrameReceiverRequest request) {
+  mojo::MakeStrongBinding(base::MakeUnique<OffscreenCanvasFrameReceiverImpl>(),
+                          std::move(request));
 }
 
-OffscreenCanvasFrameReceiverImpl::OffscreenCanvasFrameReceiverImpl(
-    mojo::InterfaceRequest<blink::mojom::OffscreenCanvasFrameReceiver> request)
-    : binding_(this, std::move(request)) {}
-
-OffscreenCanvasFrameReceiverImpl::~OffscreenCanvasFrameReceiverImpl() {}
-
 void OffscreenCanvasFrameReceiverImpl::SubmitCompositorFrame(
     const cc::SurfaceId& surface_id,
     cc::CompositorFrame frame) {
     cc::Surface* surface = GetSurfaceManager()->GetSurfaceForId(surface_id);
     if (surface) {
         surface->QueueFrame(std::move(frame), base::Closure());
     }
     // If surface doet not exist, drop the frame.
 }
 
 }  // namespace content