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

media/base/video_frame_metadata.cc

Index: media/base/video_frame_metadata.cc
diff --git a/media/base/video_frame_metadata.cc b/media/base/video_frame_metadata.cc
index 388e001ca84c4d173e40ae14eb24f165374e1dac..5d670a197250c755aa58a3fae81da1133be55f6f 100644
--- a/media/base/video_frame_metadata.cc
+++ b/media/base/video_frame_metadata.cc
@@ -170,7 +170,7 @@ const base::BinaryValue* VideoFrameMetadata::GetBinaryValue(Key key) const {
   const base::Value* internal_value = nullptr;
   if (dictionary_.GetWithoutPathExpansion(ToInternalKey(key),
                                           &internal_value) &&
-      internal_value->GetType() == base::Value::TYPE_BINARY) {
+      internal_value->GetType() == base::Value::Type::BINARY) {
     return static_cast<const base::BinaryValue*>(internal_value);
   }
   return nullptr;