Allow the url fragment to be matched with optimization filters

Leaves the username and password fields cleared.

Change-Id: I2bd6424e6257b361fa1fa0336da612c04b2223af
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5337539


Reviewed-by: Sophie Chang <sophiechang@chromium.org>
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1267502}