Revert 167808 - Get rid of use of CreateStringValue in chromeos/ directory.

chrome/browser/chromeos/extensions/file_manager_util.cc

Index: chrome/browser/chromeos/extensions/file_manager_util.cc
===================================================================
--- chrome/browser/chromeos/extensions/file_manager_util.cc	(revision 167824)
+++ chrome/browser/chromeos/extensions/file_manager_util.cc	(working copy)
@@ -341,7 +341,7 @@
       ListValue* extensions_list = new ListValue();
       for (size_t j = 0; j < file_types->extensions[i].size(); ++j) {
         extensions_list->Append(
-            new base::StringValue(file_types->extensions[i][j]));
+            Value::CreateStringValue(file_types->extensions[i][j]));
       }
 
       DictionaryValue* dict = new DictionaryValue();