Use mojo::StrongBinding in PlatformVerificationImpl.

chrome/browser/chromeos/attestation/platform_verification_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 CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/chromeos/attestation/platform_verification_flow.h"
 #include "content/public/browser/render_frame_host.h"
 #include "media/mojo/interfaces/platform_verification.mojom.h"
-#include "third_party/mojo/src/mojo/public/cpp/bindings/interface_impl.h"
+#include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
 
 namespace chromeos {
 namespace attestation {
 
 // Implements media::interfaces::PlatformVerification on ChromeOS using
 // PlatformVerificationFlow. Can only be used on the UI thread because
 // PlatformVerificationFlow lives on the UI thread.
 class PlatformVerificationImpl
-    : public mojo::InterfaceImpl<media::interfaces::PlatformVerification> {
+    : public media::interfaces::PlatformVerification {
  public:
   static void Create(
       content::RenderFrameHost* render_frame_host,
       mojo::InterfaceRequest<media::interfaces::PlatformVerification> request);
 
-  explicit PlatformVerificationImpl(
-      content::RenderFrameHost* render_frame_host);
+  PlatformVerificationImpl(
+      content::RenderFrameHost* render_frame_host,
+      mojo::InterfaceRequest<PlatformVerification> request);
   ~PlatformVerificationImpl() override;
 
   // mojo::InterfaceImpl<PlatformVerification> implementation.
   void ChallengePlatform(const mojo::String& service_id,
                          const mojo::String& challenge,
                          const ChallengePlatformCallback& callback) override;
 
  private:
   using Result = PlatformVerificationFlow::Result;
 
   void OnPlatformChallenged(const ChallengePlatformCallback& callback,
                             Result result,
                             const std::string& signed_data,
                             const std::string& signature,
                             const std::string& platform_key_certificate);
 
+  mojo::StrongBinding<media::interfaces::PlatformVerification> binding_;
+
   content::RenderFrameHost* const render_frame_host_;
 
   scoped_refptr<PlatformVerificationFlow> platform_verification_flow_;
 
   base::WeakPtrFactory<PlatformVerificationImpl> weak_factory_;
 };
 
 }  // namespace attestation
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_IMPL_H_