Add base namespace to more values in sync and elsewhere.

sync/js/js_event_details_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/js/js_event_details.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 namespace {
 
 class JsEventDetailsTest : public testing::Test {};
 
 TEST_F(JsEventDetailsTest, EmptyList) {
   JsEventDetails details;
   EXPECT_TRUE(details.Get().empty());
   EXPECT_EQ("{}", details.ToString());
 }
 
 TEST_F(JsEventDetailsTest, FromDictionary) {
-  DictionaryValue dict;
+  base::DictionaryValue dict;
   dict.SetString("foo", "bar");
-  dict.Set("baz", new ListValue());
+  dict.Set("baz", new base::ListValue());
 
-  scoped_ptr<DictionaryValue> dict_copy(dict.DeepCopy());
+  scoped_ptr<base::DictionaryValue> dict_copy(dict.DeepCopy());
 
   JsEventDetails details(&dict);
 
   // |details| should take over |dict|'s data.
   EXPECT_TRUE(dict.empty());
   EXPECT_TRUE(details.Get().Equals(dict_copy.get()));
 }
 
 }  // namespace
 }  // namespace syncer