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

headless/public/domains/types_unittest.cc

Index: headless/public/domains/types_unittest.cc
diff --git a/headless/public/domains/types_unittest.cc b/headless/public/domains/types_unittest.cc
index 860f69ba50b91f317657a72da613a4f6b79ea9f7..db07df1a58d4d2bd65a5ae071bbb0dbe7e3437e3 100644
--- a/headless/public/domains/types_unittest.cc
+++ b/headless/public/domains/types_unittest.cc
@@ -204,11 +204,11 @@ TEST(TypesTest, AnyProperty) {
           .SetValue(std::move(value))
           .Build());
   EXPECT_TRUE(object);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, object->GetValue()->GetType());
+  EXPECT_EQ(base::Value::Type::INTEGER, object->GetValue()->GetType());
 
   std::unique_ptr<accessibility::AXValue> clone(object->Clone());
   EXPECT_TRUE(clone);
-  EXPECT_EQ(base::Value::TYPE_INTEGER, clone->GetValue()->GetType());
+  EXPECT_EQ(base::Value::Type::INTEGER, clone->GetValue()->GetType());
 
   int clone_value;
   EXPECT_TRUE(clone->GetValue()->GetAsInteger(&clone_value));