media: Use new wrapper types for media mojo interfaces

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/callback.h"
@@ skipping 12 matching lines @@
  public:
   static void Create(
       content::RenderFrameHost* render_frame_host,
       mojo::InterfaceRequest<media::mojom::PlatformVerification> request);
 
   explicit PlatformVerificationImpl(
       content::RenderFrameHost* render_frame_host);
   ~PlatformVerificationImpl() override;
 
   // mojo::InterfaceImpl<PlatformVerification> implementation.
-  void ChallengePlatform(const mojo::String& service_id,
-                         const mojo::String& challenge,
+  void ChallengePlatform(const std::string& service_id,
+                         const std::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);
 
   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_