Fix include guards of files in src/ios.

ios/web/webui/url_data_source_ios_impl.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_INTERNAL_WEB_WEBUI_URL_DATA_SOURCE_IMPL_IOS_H_
-#define IOS_INTERNAL_WEB_WEBUI_URL_DATA_SOURCE_IMPL_IOS_H_
+#ifndef IOS_WEB_WEBUI_URL_DATA_SOURCE_IOS_IMPL_H_
+#define IOS_WEB_WEBUI_URL_DATA_SOURCE_IOS_IMPL_H_
 
 #include <memory>
 
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "ios/web/webui/url_data_manager_ios.h"
 
 namespace base {
 class RefCountedMemory;
 }
@@ skipping 73 matching lines @@
   // should only be accessed on the IO thread. This reference can't be via a
   // scoped_refptr else there would be a cycle between the backend and data
   // source.
   URLDataManagerIOSBackend* backend_;
 
   std::unique_ptr<URLDataSourceIOS> source_;
 };
 
 }  // namespace web
 
-#endif  // IOS_INTERNAL_WEB_WEBUI_URL_DATA_SOURCE_IMPL_IOS_H_
+#endif  // IOS_WEB_WEBUI_URL_DATA_SOURCE_IOS_IMPL_H_