GitLab

There is a new endpoint for serving page annotation data. This CL
updates to the new endpoint.

Bug: 1149236
Change-Id: I65f4f30473654bccf8392144e1f585177af32fb8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2541578
Commit-Queue: David Maunder <davidjm@chromium.org>
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Reviewed-by: Wei-Yin Chen (陳威尹) <wychen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#830049}