Revert of Fix inspector overlay when use-zoom-for-dsf is enabled. (patchset #8 id:140001 of https://codereview.chromium.org/2108803006/ )

Reason for revert:
inspector/elements/shadow/elements-panel-shadow-selection-on-refresh-1.html is crashy after this change.

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=inspector%2Felements%2Fshadow%2Felements-panel-shadow-selection-on-refresh-1.html

Original issue's description:
> Fix inspector overlay when use-zoom-for-dsf is enabled.
>
> Inspector overlays were misaligned because the path points were drawing
> in window coordinates and needed to be scaled to viewport coordinates.
> Should be no change when use-zoom-for-dsf is off.
>
> BUG=622862
>
> Committed: https://crrev.com/6651b97ebd509e97bea8929303738dc20a3ed880
> Cr-Commit-Position: refs/heads/master@{#404063}

TBR=dgozman@chromium.org,oshima@chromium.org,bokan@chromium.org,bsep@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=622862

Review-Url: https://codereview.chromium.org/2127053002
Cr-Commit-Position: refs/heads/master@{#404093}
5 files changed