GitLab

This CL:

* Merges InstantTestBase::Init into InstantTestBase::SetupInstant.
  Both functions were required to be called successively for instant
  setup to take effect. Merging the functions makes this more explicit.

* Removes option to initialize a suggestion URL since that functionality
  was never used.

* Removes some getters and fields, which are no longer needed.

Change-Id: Ia0c9f7f601f71b5fe41c74e067a0aa1f6aaa543d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2515222Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824039}