Port DictionaryValue to use string16 instead of wstring.

base/json_writer_unittest.cc

Index: base/json_writer_unittest.cc
===================================================================
--- base/json_writer_unittest.cc	(revision 10828)
+++ base/json_writer_unittest.cc	(working copy)
@@ -4,6 +4,7 @@
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "base/json_writer.h"
+#include "base/string_util.h"
 #include "base/values.h"
 
 TEST(JSONWriterTest, Writing) {
@@ -36,10 +37,10 @@
   // list list nesting, etc.
   DictionaryValue root_dict;
   ListValue* list = new ListValue;
-  root_dict.Set(L"list", list);
+  root_dict.Set(ASCIIToUTF16("list"), list);
   DictionaryValue* inner_dict = new DictionaryValue;
   list->Append(inner_dict);
-  inner_dict->SetInteger(L"inner int", 10);
+  inner_dict->SetInteger(ASCIIToUTF16("inner int"), 10);
   ListValue* inner_list = new ListValue;
   list->Append(inner_list);
   list->Append(Value::CreateBooleanValue(true));
@@ -54,5 +55,3 @@
             "}\r\n",
             output_js);
 }
-
-