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

ios/web/public/webui/web_ui_ios.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_H_
-#define IOS_PUBLIC_PROVIDER_WEB_WEB_UI_IOS_H_
+#ifndef IOS_WEB_PUBLIC_WEBUI_WEB_UI_IOS_H_
+#define IOS_WEB_PUBLIC_WEBUI_WEB_UI_IOS_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/strings/string16.h"
 
 class GURL;
 
 namespace base {
 class ListValue;
@@ skipping 59 matching lines @@
                                       const base::Value& arg2,
                                       const base::Value& arg3,
                                       const base::Value& arg4) = 0;
   virtual void CallJavascriptFunction(
       const std::string& function_name,
       const std::vector<const base::Value*>& args) = 0;
 };
 
 }  // namespace web
 
-#endif  // IOS_PUBLIC_PROVIDER_WEB_WEB_UI_IOS_H_
+#endif  // IOS_WEB_PUBLIC_WEBUI_WEB_UI_IOS_H_