[NetInfo] Clean up after adding connection.downlinkMax

Patch 1) https://crrev.com/1308943005
Patch 2) https://crrev.com/1306423004
Patch 3) https://crrev.com/1309903006 (this)

BUG=412741

Review URL: https://codereview.chromium.org/1309903006

git-svn-id: svn://svn.chromium.org/blink/trunk/public@202589 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed