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

components/cast_channel/cast_socket_service.cc

 // 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.
 
-#include "extensions/browser/api/cast_channel/cast_socket_service.h"
+#include "components/cast_channel/cast_socket_service.h"
 
 #include "base/memory/ptr_util.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
-namespace extensions {
-namespace api {
 namespace cast_channel {
 
 int CastSocketService::last_channel_id_ = 0;
 
 CastSocketService::CastSocketService()
     : RefcountedKeyedService(
           BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)) {
   DETACH_FROM_THREAD(thread_checker_);
 }
 
@@ skipping 26 matching lines @@
 CastSocket* CastSocketService::GetSocket(int channel_id) const {
   DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
   DCHECK(channel_id > 0);
   const auto& socket_it = sockets_.find(channel_id);
   return socket_it == sockets_.end() ? nullptr : socket_it->second.get();
 }
 
 void CastSocketService::ShutdownOnUIThread() {}
 
 }  // namespace cast_channel
-}  // namespace api
-}  // namespace extensions