Remove the Value class names from the global namespace.

chrome/browser/prefs/pref_hash_store_impl_unittest.cc

Index: chrome/browser/prefs/pref_hash_store_impl_unittest.cc
diff --git a/chrome/browser/prefs/pref_hash_store_impl_unittest.cc b/chrome/browser/prefs/pref_hash_store_impl_unittest.cc
index 330879a89e3e1a0fcde6dc3bab2a3f1acece35b5..c6e3aee5366ba8fb412b269798973d92acd644ce 100644
--- a/chrome/browser/prefs/pref_hash_store_impl_unittest.cc
+++ b/chrome/browser/prefs/pref_hash_store_impl_unittest.cc
@@ -37,15 +37,15 @@ TEST(PrefHashStoreImplTest, TestCase) {
   ASSERT_EQ(PrefHashStore::CHANGED,
             pref_hash_store.CheckValue("path1", &string_2));
 
-  DictionaryValue dict;
-  dict.Set("a", new StringValue("foo"));
-  dict.Set("d", new StringValue("bad"));
-  dict.Set("b", new StringValue("bar"));
-  dict.Set("c", new StringValue("baz"));
+  base::DictionaryValue dict;
+  dict.Set("a", new base::StringValue("foo"));
+  dict.Set("d", new base::StringValue("bad"));
+  dict.Set("b", new base::StringValue("bar"));
+  dict.Set("c", new base::StringValue("baz"));
 
   // Manually shove in a legacy hash.
   DictionaryPrefUpdate update(&local_state, prefs::kProfilePreferenceHashes);
-  DictionaryValue* child_dictionary = NULL;
+  base::DictionaryValue* child_dictionary = NULL;
   ASSERT_TRUE(update->GetDictionary("store_id", &child_dictionary));
   child_dictionary->SetString(
       "path1",