Revert of Remove a bunch of NPAPI quirks and related support code (patchset #1 id:80001 of https://codereview.chromium.org/1813143002/ )
Reason for revert:
Speculative revert: could have broken Win8 GN build. See crbug.com/597032
Original issue's description:
> Remove a bunch of NPAPI quirks and related support code
>
> BUG=493212
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_site_isolation
>
> Committed: https://crrev.com/f8396023a9e38d3ec249cdf1f730e4b79cebbc7e
> Cr-Commit-Position: refs/heads/master@{#382642}
TBR=dcheng@chromium.org,jam@chromium.org,piman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=493212
Review URL: https://codereview.chromium.org/1825253002
Cr-Commit-Position: refs/heads/master@{#382684}
36 files changed
