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

components/cast_channel/keep_alive_delegate.h

 // 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.
 
-#ifndef EXTENSIONS_BROWSER_API_CAST_CHANNEL_KEEP_ALIVE_DELEGATE_H_
-#define EXTENSIONS_BROWSER_API_CAST_CHANNEL_KEEP_ALIVE_DELEGATE_H_
+#ifndef COMPONENTS_CAST_CHANNEL_KEEP_ALIVE_DELEGATE_H_
+#define COMPONENTS_CAST_CHANNEL_KEEP_ALIVE_DELEGATE_H_
 
 #include "base/macros.h"
 #include "base/threading/thread_checker.h"
 #include "base/timer/timer.h"
-#include "extensions/browser/api/cast_channel/cast_transport.h"
-#include "extensions/common/api/cast_channel/cast_channel.pb.h"
+#include "components/cast_channel/cast_transport.h"
+#include "components/cast_channel/proto/cast_channel.pb.h"
 
-namespace extensions {
-namespace api {
 namespace cast_channel {
 
 class CastSocket;
 class Logger;
 
 // Decorator delegate which provides keep-alive functionality.
 // Keep-alive messages are handled by this object; all other messages and
 // errors are passed to |inner_delegate_|.
 class KeepAliveDelegate : public CastTransport::Delegate {
  public:
@@ skipping 72 matching lines @@
 
   // Fired when |liveness_timer_| is exceeded.
   std::unique_ptr<base::Timer> liveness_timer_;
 
   // The PING message to send over the wire.
   CastMessage ping_message_;
 
   // The PONG message to send over the wire.
   CastMessage pong_message_;
 
-  base::ThreadChecker thread_checker_;
+  THREAD_CHECKER(thread_checker_);
 
   DISALLOW_COPY_AND_ASSIGN(KeepAliveDelegate);
 };
 
 }  // namespace cast_channel
-}  // namespace api
-}  // namespace extensions
 
-#endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_KEEP_ALIVE_DELEGATE_H_
+#endif  // COMPONENTS_CAST_CHANNEL_KEEP_ALIVE_DELEGATE_H_