mojo::Callback -> base::Callback

media/mojo/services/mojo_provision_fetcher.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 MEDIA_MOJO_SERVICES_MOJO_PROVISION_FETCHER_H_
 #define MEDIA_MOJO_SERVICES_MOJO_PROVISION_FETCHER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "media/base/android/provision_fetcher.h"
@@ skipping 10 matching lines @@
 
   // ProvisionFetcher implementation:
   void Retrieve(const std::string& default_url,
                 const std::string& request_data,
                 const ResponseCB& response_cb) final;
 
  private:
   // Callback for mojom::ProvisionFetcherPtr::Retrieve().
   void OnResponse(const ResponseCB& response_cb,
                   bool success,
-                  const std::string& response);
+                  mojo::String response);
 
   mojom::ProvisionFetcherPtr provision_fetcher_ptr_;
 
   base::WeakPtrFactory<MojoProvisionFetcher> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoProvisionFetcher);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_PROVISION_FETCHER_H_