Revert of [blink] Unique pointers in Platform.h

content/renderer/render_thread_impl.h

 // Copyright (c) 2012 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 CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 315 matching lines @@
   SynchronousCompositorFilter* sync_compositor_message_filter() {
     return sync_compositor_message_filter_.get();
   }
 
   scoped_refptr<StreamTextureFactory> GetStreamTexureFactory();
   bool EnableStreamTextureCopy();
 #endif
 
   // Creates the embedder implementation of WebMediaStreamCenter.
   // The resulting object is owned by WebKit and deleted by WebKit at tear-down.
-  std::unique_ptr<blink::WebMediaStreamCenter> CreateMediaStreamCenter(
+  blink::WebMediaStreamCenter* CreateMediaStreamCenter(
       blink::WebMediaStreamCenterClient* client);
 
   BrowserPluginManager* browser_plugin_manager() const {
     return browser_plugin_manager_.get();
   }
 
 #if BUILDFLAG(ENABLE_WEBRTC)
   // Returns a factory used for creating RTC PeerConnection objects.
   PeerConnectionDependencyFactory* GetPeerConnectionDependencyFactory();
 
@@ skipping 252 matching lines @@
 
   // These objects live solely on the render thread.
   std::unique_ptr<AppCacheDispatcher> appcache_dispatcher_;
   std::unique_ptr<DomStorageDispatcher> dom_storage_dispatcher_;
   std::unique_ptr<IndexedDBDispatcher> main_thread_indexed_db_dispatcher_;
   std::unique_ptr<blink::scheduler::RendererScheduler> renderer_scheduler_;
   std::unique_ptr<RendererBlinkPlatformImpl> blink_platform_impl_;
   std::unique_ptr<ResourceDispatchThrottler> resource_dispatch_throttler_;
   std::unique_ptr<CacheStorageDispatcher> main_thread_cache_storage_dispatcher_;
 
+  // Used on the render thread and deleted by WebKit at shutdown.
+  blink::WebMediaStreamCenter* media_stream_center_;
+
   // Used on the renderer and IPC threads.
   scoped_refptr<BlobMessageFilter> blob_message_filter_;
   scoped_refptr<DBMessageFilter> db_message_filter_;
   scoped_refptr<AudioInputMessageFilter> audio_input_message_filter_;
   scoped_refptr<AudioMessageFilter> audio_message_filter_;
   scoped_refptr<MidiMessageFilter> midi_message_filter_;
   scoped_refptr<DevToolsAgentFilter> devtools_agent_message_filter_;
 
   std::unique_ptr<BrowserPluginManager> browser_plugin_manager_;
 
@@ skipping 169 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_