GitLab

Expose an API to perform a prerender (implemented using
NoStatePrefetch).

A browsertest and a javatest have been added to verify the expected
behavior.

Bug: 1136091
Change-Id: I158b5b954fbbf2e3cb9821180d6afd6aa042abd2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2470634
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Ryan Sturm <ryansturm@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819762}