Revert of Correctly update the popup window position (patchset #6 id:160001 of https://codereview.c…

Revert of Correctly update the popup window position (patchset #6 id:160001 of https://codereview.chromium.org/2583873002/ )

Reason for revert:
Breaking M57
crbug/698627

Original issue's description:
> Correctly update the popup window position
>
> It was updating the child window instead.
> This CL hooks up the bounds change to the desktop widget correctly.
>
> BUG=612270
> TEST=fixed test harness to do the correct check.
>
> Review-Url: https://codereview.chromium.org/2583873002
> Cr-Commit-Position: refs/heads/master@{#442741}
> Committed: https://chromium.googlesource.com/chromium/src/+/0aafa24f1ad6b4331bdb65db12ffc1842ba69b1d

TBR=sadrul@chromium.org,bsep@chromium.org,oshima@chromium.org
BUG=612270, 698627
Review-Url: https://codereview.chromium.org/2728293004
Cr-Commit-Position: refs/heads/master@{#455231}
(cherry picked from commit 2ba9b1f20d4f158b5cdeb359d9ab7d836e09858a)