Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/policy/url_blacklist_manager_unittest.cc

Index: chrome/browser/policy/url_blacklist_manager_unittest.cc
diff --git a/chrome/browser/policy/url_blacklist_manager_unittest.cc b/chrome/browser/policy/url_blacklist_manager_unittest.cc
index 27d3307029c5e2845f97eb8cda4f32ea0776b9fd..cc5926b31df6ca9d192363c00f3d5992f7aa7027 100644
--- a/chrome/browser/policy/url_blacklist_manager_unittest.cc
+++ b/chrome/browser/policy/url_blacklist_manager_unittest.cc
@@ -183,10 +183,10 @@ TEST_P(URLBlacklistFilterToComponentsTest, FilterToComponents) {
 }
 
 TEST_F(URLBlacklistManagerTest, SingleUpdateForTwoPrefChanges) {
-  ListValue* blacklist = new ListValue;
-  blacklist->Append(new StringValue("*.google.com"));
-  ListValue* whitelist = new ListValue;
-  whitelist->Append(new StringValue("mail.google.com"));
+  base::ListValue* blacklist = new base::ListValue;
+  blacklist->Append(new base::StringValue("*.google.com"));
+  base::ListValue* whitelist = new base::ListValue;
+  whitelist->Append(new base::StringValue("mail.google.com"));
   pref_service_.SetManagedPref(policy_prefs::kUrlBlacklist, blacklist);
   pref_service_.SetManagedPref(policy_prefs::kUrlBlacklist, whitelist);
   loop_.RunUntilIdle();