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

components/cast_channel/cast_socket_service.h

Index: components/cast_channel/cast_socket_service.h
diff --git a/extensions/browser/api/cast_channel/cast_socket_service.h b/components/cast_channel/cast_socket_service.h
similarity index 85%
rename from extensions/browser/api/cast_channel/cast_socket_service.h
rename to components/cast_channel/cast_socket_service.h
index 6765c15160381946da7b10f38362f2dd160dccc8..94a274e2492c9a4311acde8076b8765277f0298d 100644
--- a/extensions/browser/api/cast_channel/cast_socket_service.h
+++ b/components/cast_channel/cast_socket_service.h
@@ -2,20 +2,18 @@
 // 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
@@ -23,6 +21,8 @@ namespace cast_channel {
 // 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();
 
@@ -71,7 +71,5 @@ class CastSocketService : public KeyedService {
 };
 
 }  // 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_