Fix include guards of files in src/ios.

ios/web/webui/url_data_manager_ios_backend.h

Index: ios/web/webui/url_data_manager_ios_backend.h
diff --git a/ios/web/webui/url_data_manager_ios_backend.h b/ios/web/webui/url_data_manager_ios_backend.h
index e483c3212b2753aec62d3025c5d1d3395557e2f9..48878d675c120b17f0715d2e69d69ec15856a8ee 100644
--- a/ios/web/webui/url_data_manager_ios_backend.h
+++ b/ios/web/webui/url_data_manager_ios_backend.h
@@ -2,8 +2,8 @@
 // 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_MANAGER_BACKEND_IOS_H_
-#define IOS_INTERNAL_WEB_WEBUI_URL_DATA_MANAGER_BACKEND_IOS_H_
+#ifndef IOS_WEB_WEBUI_URL_DATA_MANAGER_IOS_BACKEND_H_
+#define IOS_WEB_WEBUI_URL_DATA_MANAGER_IOS_BACKEND_H_
 
 #include <map>
 #include <memory>
@@ -98,4 +98,4 @@ class URLDataManagerIOSBackend : public base::SupportsUserData::Data {
 
 }  // namespace web
 
-#endif  // IOS_INTERNAL_WEB_WEBUI_URL_DATA_MANAGER_BACKEND_IOS_H_
+#endif  // IOS_WEB_WEBUI_URL_DATA_MANAGER_IOS_BACKEND_H_