Make base::Value::TYPE a scoped enum.

components/sync_preferences/pref_model_associator_unittest.cc

Index: components/sync_preferences/pref_model_associator_unittest.cc
diff --git a/components/sync_preferences/pref_model_associator_unittest.cc b/components/sync_preferences/pref_model_associator_unittest.cc
index dbfd06e7c5a97a51155ccebcdeea484a97304a73..22577e0b5af04755ef4449442acc0ab059e8dad8 100644
--- a/components/sync_preferences/pref_model_associator_unittest.cc
+++ b/components/sync_preferences/pref_model_associator_unittest.cc
@@ -81,9 +81,9 @@ class AbstractPreferenceMergeTest : public testing::Test {
         pref_service_->FindPreference(pref_name.c_str());
     ASSERT_TRUE(pref);
     base::Value::Type type = pref->GetType();
-    if (type == base::Value::TYPE_DICTIONARY)
+    if (type == base::Value::Type::DICTIONARY)
       empty_value.reset(new base::DictionaryValue);
-    else if (type == base::Value::TYPE_LIST)
+    else if (type == base::Value::Type::LIST)
       empty_value.reset(new base::ListValue);
     else
       FAIL();