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

components/history/core/browser/web_history_service.cc

Index: components/history/core/browser/web_history_service.cc
diff --git a/components/history/core/browser/web_history_service.cc b/components/history/core/browser/web_history_service.cc
index abe202c87cdbc5dddefc9b56086533918efb5802..c74348c04e7640aedadaaab46623015dddf5b4d3 100644
--- a/components/history/core/browser/web_history_service.cc
+++ b/components/history/core/browser/web_history_service.cc
@@ -360,7 +360,7 @@ std::unique_ptr<base::DictionaryValue> WebHistoryService::ReadResponse(
   if (request->GetResponseCode() == net::HTTP_OK) {
     std::unique_ptr<base::Value> value =
         base::JSONReader::Read(request->GetResponseBody());
-    if (value.get() && value.get()->IsType(base::Value::TYPE_DICTIONARY))
+    if (value.get() && value.get()->IsType(base::Value::Type::DICTIONARY))
       result.reset(static_cast<base::DictionaryValue*>(value.release()));
     else
       DLOG(WARNING) << "Non-JSON response received from history server.";