Privatize StrongBinding lifetime management

content/browser/media/capture/image_capture_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 CONTENT_BROWSER_MEDIA_CAPTURE_IMAGE_CAPTURE_IMPL_H_
 #define CONTENT_BROWSER_MEDIA_CAPTURE_IMAGE_CAPTURE_IMPL_H_
 
 #include "media/mojo/interfaces/image_capture.mojom.h"
-#include "mojo/public/cpp/bindings/interface_request.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace content {
 
 class ImageCaptureImpl : public media::mojom::ImageCapture {
  public:
-  static void Create(
-      mojo::InterfaceRequest<media::mojom::ImageCapture> request);
+  ImageCaptureImpl();
   ~ImageCaptureImpl() override;
 
+  static void Create(media::mojom::ImageCaptureRequest request);
+
   void GetCapabilities(const std::string& source_id,
                        const GetCapabilitiesCallback& callback) override;
 
   void SetOptions(const std::string& source_id,
                   media::mojom::PhotoSettingsPtr settings,
                   const SetOptionsCallback& callback) override;
 
   void TakePhoto(const std::string& source_id,
                  const TakePhotoCallback& callback) override;
 
  private:
-  explicit ImageCaptureImpl(
-      mojo::InterfaceRequest<media::mojom::ImageCapture> request);
-
-  mojo::StrongBinding<media::mojom::ImageCapture> binding_;
-
   DISALLOW_COPY_AND_ASSIGN(ImageCaptureImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_IMAGE_CAPTURE_IMPL_H_