Move MediaDrmBridge provision communication to native side.

media/base/android/media_client_android.cc

 // 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.
 
 #include "media/base/android/media_client_android.h"
 
 #include "base/logging.h"
 #include "base/stl_util.h"
 
+#include "media/base/provision_fetcher.h"
+
 namespace media {
 
 static MediaClientAndroid* g_media_client = nullptr;
 
 void SetMediaClientAndroid(MediaClientAndroid* media_client) {
   DCHECK(!g_media_client);
   g_media_client = media_client;
 }
 
 MediaClientAndroid* GetMediaClientAndroid() {
   return g_media_client;
 }
 
 MediaClientAndroid::MediaClientAndroid() {
 }
 
 MediaClientAndroid::~MediaClientAndroid() {
 }
 
+scoped_ptr<ProvisionFetcher> MediaClientAndroid::CreateDefaultFetcher() const {
+  return nullptr;
+}
+
 void MediaClientAndroid::AddKeySystemUUIDMappings(KeySystemUuidMap* map) {
 }
 
 media::MediaDrmBridgeDelegate* MediaClientAndroid::GetMediaDrmBridgeDelegate(
     const std::vector<uint8_t>& scheme_uuid) {
   return nullptr;
 }
 
 }  // namespace media