Extensions: Move cast_channel and hid APIs to extensions/.

chrome/browser/extensions/api/cast_channel/cast_message_util.h

-// Copyright 2013 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 CHROME_BROWSER_EXTENSIONS_API_CAST_CHANNEL_CAST_MESSAGE_UTIL_H_
-#define CHROME_BROWSER_EXTENSIONS_API_CAST_CHANNEL_CAST_MESSAGE_UTIL_H_
-
-#include <string>
-
-namespace extensions {
-namespace api {
-namespace cast_channel {
-
-class CastMessage;
-class DeviceAuthMessage;
-struct MessageInfo;
-
-// Fills |message_proto| from |message| and returns true on success.
-bool MessageInfoToCastMessage(const MessageInfo& message,
-                              CastMessage* message_proto);
-
-// Fills |message| from |message_proto| and returns true on success.
-bool CastMessageToMessageInfo(const CastMessage& message_proto,
-                              MessageInfo* message);
-
-// Returns a human readable string for |message_proto|.
-std::string CastMessageToString(const CastMessage& message_proto);
-
-// Returns a human readable string for |message|.
-std::string AuthMessageToString(const DeviceAuthMessage& message);
-
-// Fills |message_proto| appropriately for an auth challenge request message.
-void CreateAuthChallengeMessage(CastMessage* message_proto);
-
-// Returns whether the given message is an auth handshake message.
-bool IsAuthMessage(const CastMessage& message);
-
-}  // namespace cast_channel
-}  // namespace api
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_EXTENSIONS_API_CAST_CHANNEL_CAST_MESSAGE_UTIL_H_