Revert "Remove web::WaitUntilWindowIdInjected test util."

This reverts commit e71108dbd98e09ab4a133f37c5b7448bdf1094a3.

Reason for revert: Removing windowId will be reverted in crrev.com/c/1409811 so this wait should be retained.

Original change's description:
> Remove web::WaitUntilWindowIdInjected test util.
> 
> WindowID is no longer injected so there is no need to wait for it.
> 
> Bug: 905939
> Change-Id: Id1896eeb4a2e00f2f79e7f713443cbc80ac95b33
> Reviewed-on: https://chromium-review.googlesource.com/c/1377339
> Reviewed-by: Eugene But <eugenebut@chromium.org>
> Commit-Queue: Mike Dougherty <michaeldo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#616758}

TBR=eugenebut@chromium.org,michaeldo@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 905939
Change-Id: Ibdeed294047c1f93351cd232979e129ec0f81ace
Reviewed-on: https://chromium-review.googlesource.com/c/1410008
Reviewed-by: Mike Dougherty <michaeldo@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Mike Dougherty <michaeldo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#623119}
5 files changed