Remove an unnecessary loop when converting scheme in NavigatorContentUtils

third_party/WebKit/Source/modules/navigatorcontentutils/NavigatorContentUtils.cpp

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  * Copyright (C) 2014, Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 89 matching lines @@
 
     return true;
 }
 
 static bool isSchemeWhitelisted(const String& scheme)
 {
     if (!schemeWhitelist)
         initCustomSchemeHandlerWhitelist();
 
     StringBuilder builder;
-    unsigned length = scheme.length();
-    for (unsigned i = 0; i < length; ++i)
-        builder.append(toASCIILower(scheme[i]));
+    builder.append(scheme.lower().ascii().data());
 
     return schemeWhitelist->contains(builder.toString());
 }
 
 static bool verifyCustomHandlerScheme(const String& scheme, ExceptionState& exceptionState)
 {
     if (!isValidProtocol(scheme)) {
         exceptionState.throwSecurityError("The scheme '" + scheme + "' is not valid protocol");
         return false;
     }
@@ skipping 109 matching lines @@
 {
     return "NavigatorContentUtils";
 }
 
 void provideNavigatorContentUtilsTo(LocalFrame& frame, NavigatorContentUtilsClient* client)
 {
     NavigatorContentUtils::provideTo(frame, NavigatorContentUtils::supplementName(), NavigatorContentUtils::create(client));
 }
 
 } // namespace blink