[cast_channel] Move cast_channel related files from //extensions to //components

components/cast_channel/cast_socket_service.h

 // Copyright 2017 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 EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_CHANNEL_SERVICE_H_
-#define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_CHANNEL_SERVICE_H_
+#ifndef COMPONENTS_CAST_CHANNEL_CAST_CHANNEL_SERVICE_H_
+#define COMPONENTS_CAST_CHANNEL_CAST_CHANNEL_SERVICE_H_
 
 #include <map>
 #include <memory>
 
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
+#include "components/cast_channel/cast_socket.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/browser_thread.h"
-#include "extensions/browser/api/cast_channel/cast_socket.h"
 
-namespace extensions {
-namespace api {
 namespace cast_channel {
 
 // This class adds, removes, and returns cast sockets created by CastChannelAPI
 // to underlying storage.
 // This class is not thread safe. All methods must be called from the IO thread.
 class CastSocketRegistry {
  public:
+  using CastSocket = ::cast_channel::CastSocket;
+
   CastSocketRegistry();
   ~CastSocketRegistry();
 
   // Adds |socket| to |sockets_| and returns the new channel_id. Takes ownership
   // of |socket|.
   int AddSocket(std::unique_ptr<CastSocket> socket);
 
   // Removes the CastSocket corresponding to |channel_id| from the
   // CastSocketRegistry. Returns nullptr if no such CastSocket exists.
   std::unique_ptr<CastSocket> RemoveSocket(int channel_id);
@@ skipping 28 matching lines @@
   CastSocketRegistry* GetOrCreateSocketRegistry();
 
  private:
   std::unique_ptr<CastSocketRegistry, content::BrowserThread::DeleteOnIOThread>
       sockets_;
 
   DISALLOW_COPY_AND_ASSIGN(CastSocketService);
 };
 
 }  // namespace cast_channel
-}  // namespace api
-}  // namespace extensions
 
-#endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_CHANNEL_SERVICE_H_
+#endif  // COMPONENTS_CAST_CHANNEL_CAST_CHANNEL_SERVICE_H_