Move MediaDrmBridge provision communication to native side.

media/base/android/android_cdm_factory.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_BASE_ANDROID_ANDROID_CDM_FACTORY_H_
 #define MEDIA_BASE_ANDROID_ANDROID_CDM_FACTORY_H_
 
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/base/android/provision_fetcher.h"
 #include "media/base/cdm_factory.h"
 #include "media/base/media_export.h"
 
 namespace media {
 
 struct CdmConfig;
 
 class MEDIA_EXPORT AndroidCdmFactory : public CdmFactory {
  public:
-  AndroidCdmFactory();
+  using CreateFetcherCB = base::Callback<scoped_ptr<ProvisionFetcher>()>;
+
+  AndroidCdmFactory(const CreateFetcherCB& create_fetcher_cb);
   ~AndroidCdmFactory() final;
 
   // CdmFactory implementation.
   void Create(const std::string& key_system,
               const GURL& security_origin,
               const CdmConfig& cdm_config,
               const SessionMessageCB& session_message_cb,
               const SessionClosedCB& session_closed_cb,
               const LegacySessionErrorCB& legacy_session_error_cb,
               const SessionKeysChangeCB& session_keys_change_cb,
               const SessionExpirationUpdateCB& session_expiration_update_cb,
               const CdmCreatedCB& cdm_created_cb) final;
 
  private:
+  CreateFetcherCB create_fetcher_cb_;
+
   DISALLOW_COPY_AND_ASSIGN(AndroidCdmFactory);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_ANDROID_ANDROID_CDM_FACTORY_H_