[cast_channel] Make cast_channel related files not depend on "cast_channel.h"

extensions/browser/api/cast_channel/cast_framer.h

 // Copyright 2014 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_FRAMER_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_FRAMER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "extensions/common/api/cast_channel.h"
+#include "components/cast_channel/cast_channel_enum.h"
 #include "net/base/io_buffer.h"
 
 namespace extensions {
 namespace api {
 namespace cast_channel {
 class CastMessage;
 
 // Class for constructing and parsing CastMessage packet data.
 class MessageFramer {
  public:
+  using ChannelError = ::cast_channel::ChannelError;
+
   // |input_buffer|: The input buffer used by all socket read operations that
   //                 feed data into the framer.
   explicit MessageFramer(scoped_refptr<net::GrowableIOBuffer> input_buffer);
   ~MessageFramer();
 
   // The number of bytes required from |input_buffer| to complete the
   // CastMessage being read.
   // Returns zero if |error_| is true (framer is in an invalid state.)
   size_t BytesRequested();
 
@@ skipping 58 matching lines @@
 
   // Disables Ingest functionality is the parser receives invalid data.
   bool error_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageFramer);
 };
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_FRAMER_H_