Add support for FIFE Avatar URL format

The method GetAvatarImageURLWithOptions() is updated to support
image URLs coming in the FIFE Avatar URL format.

This should resolve issues related to color-inverted account images
on the Chrome surface.

Bug: 911332
Change-Id: I8c0a10be69bc87a40a39cf46e0428b418d97b021
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1670888
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672116}
2 files changed