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

components/proximity_auth/proximity_auth_pref_manager.cc

Index: components/proximity_auth/proximity_auth_pref_manager.cc
diff --git a/components/proximity_auth/proximity_auth_pref_manager.cc b/components/proximity_auth/proximity_auth_pref_manager.cc
index 93e90d4e851fb630a00b5cf83b6a3618efcc6b09..7d2dbd6937b4b17e2a23274b30adc64242f660ef 100644
--- a/components/proximity_auth/proximity_auth_pref_manager.cc
+++ b/components/proximity_auth/proximity_auth_pref_manager.cc
@@ -52,7 +52,7 @@ std::string ProximityAuthPrefManager::GetDeviceAddress(
   for (base::DictionaryValue::Iterator it(*remote_ble_devices); !it.IsAtEnd();
        it.Advance()) {
     std::string value_string;
-    DCHECK(it.value().IsType(base::Value::TYPE_STRING));
+    DCHECK(it.value().IsType(base::Value::Type::STRING));
     if (it.value().GetAsString(&value_string) && value_string == public_key)
       return it.key();
   }
@@ -65,7 +65,7 @@ std::vector<std::string> ProximityAuthPrefManager::GetPublicKeys() const {
   for (base::DictionaryValue::Iterator it(*remote_ble_devices); !it.IsAtEnd();
        it.Advance()) {
     std::string value_string;
-    DCHECK(it.value().IsType(base::Value::TYPE_STRING));
+    DCHECK(it.value().IsType(base::Value::Type::STRING));
     it.value().GetAsString(&value_string);
     public_keys.push_back(value_string);
   }