Move base/values.h into the base namespace.

chrome/common/json_schema_validator_unittest_base.h

Index: chrome/common/json_schema_validator_unittest_base.h
===================================================================
--- chrome/common/json_schema_validator_unittest_base.h	(revision 91508)
+++ chrome/common/json_schema_validator_unittest_base.h	(working copy)
@@ -7,10 +7,16 @@
 
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace base {
 class DictionaryValue;
 class ListValue;
 class Value;
+}
 
+using base::DictionaryValue;
+using base::ListValue;
+using base::Value;
+
 // Base class for unit tests for JSONSchemaValidator. There is currently only
 // one implementation, JSONSchemaValidatorCPPTest.
 //