When dragging a big file into chromium - be it for uploading or because chromium is on the way between Kdenlive and rox - rox freezes, consuming lots of RAM. For example: 6 seconds for a 1GB file. Much longer if it starts using swap space.
http://youtu.be/KCPvKXCsZd4 (in this case, rox even crashes)
Expected behavior would be that it doesn't freeze or consume that much RAM.
Presumably, Chromium is asking ROX-Filer to send it all the data via the X server. It really should notice the "text/uri-list" target and fetch that instead (which gives it the local file:/// location of the file, which it can load itself in some more sensible fashion).