Extension 'vscjava.vscode-java-debug' uses a document selector without scheme

[yaohaizh]

From extension host log:

EXTHOST-LOG:::::
["Extension 'vscjava.vscode-java-debug' uses a document selector without scheme. Learn more about this: https://go.microsoft.com/fwlink/?linkid=872305"]
EXTHOST-LOG:::::
["Extension 'vscjava.vscode-java-test' uses a document selector without scheme. Learn more about this: https://go.microsoft.com/fwlink/?linkid=872305"]

[testforstephen]

Don't observe this message in latest vscode.