Revert of Re-enable GPU Rasterization for content with any author defined viewport. (patchset #2 id:20001 of https://codereview.chromium.org/2097413003/ )

Reason for revert:
This has caused an unexpectedly large regression in overall PSS (about 5MB, graph here: https://chromeperf.appspot.com/report?sid=0b072725c25637efb0d3a44383da1e24e42bbb3740a00505e4040af2173423b0&start_rev=402061&end_rev=402790).
The owners are both OOO and this is blocking Android release. This has already been reverted in the release branch but our infrastructure cannot gather data from the branch to confirm that the revert has had the intended result.

This revert will allow us to confirm that this CL was the cause of the regression. Once confirmed (or otherwise) via telemetry dashboards this revert will be re-reverted.

Original issue's description:
> Re-enable GPU Rasterization for content with any author defined viewport.
>
> BUG=591179
>
> Committed: https://crrev.com/a017b667a53b3ee5f8bc630be98c37ebf53a2339
> Cr-Commit-Position: refs/heads/master@{#402702}

TBR=aelias@chromium.org,chrishtr@chromium.org,vmiura@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=591179

Review-Url: https://codereview.chromium.org/2156553002
Cr-Commit-Position: refs/heads/master@{#405750}
4 files changed