[ios] Moved WebUI provider code to ios/web.

ios/web/public/webui/web_ui_ios_message_handler.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 IOS_PUBLIC_PROVIDER_WEB_WEB_UI_IOS_MESSAGE_HANDLER_H_
-#define IOS_PUBLIC_PROVIDER_WEB_WEB_UI_IOS_MESSAGE_HANDLER_H_
+#ifndef IOS_WEB_PUBLIC_WEBUI_WEB_UI_IOS_MESSAGE_HANDLER_H_
+#define IOS_WEB_PUBLIC_WEBUI_WEB_UI_IOS_MESSAGE_HANDLER_H_
 
 #include "base/strings/string16.h"
 
 class GURL;
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
@@ skipping 36 matching lines @@
 
  private:
   // Provide external classes access to web_ui() and set_web_ui().
   friend class WebUIIOSImpl;
 
   WebUIIOS* web_ui_;
 };
 
 }  // namespace web
 
-#endif  // IOS_PUBLIC_PROVIDER_WEB_WEB_UI_IOS_MESSAGE_HANDLER_H_
+#endif  // IOS_WEB_PUBLIC_WEBUI_WEB_UI_IOS_MESSAGE_HANDLER_H_