Revert of Don't post multiple task for executing blocked scripts. (patchset #2 id:20001 of https://codereview.chromium.org/2609763002/ )
Reason for revert:
Regression in test for time to first meaningful paint: https://crbug.com/678584
Original issue's description:
> Don't post multiple task for executing blocked scripts.
>
> We may post a lot of tasks for executing blocked scripts in the case
> where we insert multiple shadow trees each containing a style element.
> When we start parsing a style element, we mark it as blocking and
> unblock script execution after finishing parsing. Check if the previous
> task is active before posting.
>
> Found while measuring performance for issue 603621.
>
> BUG=603621
>
> Committed: https://crrev.com/26cb3bdcd2a353402b78b716862567226317dff0
> Cr-Commit-Position: refs/heads/master@{#441110}
TBR=pmeenan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=603621
Review-Url: https://codereview.chromium.org/2617763002
Cr-Commit-Position: refs/heads/master@{#441783}
1 file changed
