Revert of Enable GPU Raster on OSX

Revert of Enable GPU Raster on OSX (patchset #3 id:40001 of https://codereview.chromium.org/1881053003/ )

Reason for revert:
Failures on all webkit mac bots: https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.9/builds/31353

Original issue's description:
> This change enables GPU Raster on OSX.
>
> I've compiled a bit of benchmark data to support turning this on -
> https://docs.google.com/a/google.com/document/d/1RPEnillJOaOKW47t9DYuttQkvWDo7ilx9KDB_nJnwpc/edit?usp=sharing
> Still filling in more data, but I'm pretty happy with the results so far. In
> a number of cases we have a performance win, and in most cases we have a power win.
>
> Checking this in now will give us a long canary period before the next branch
> point to catch any issues.
>
> BUG=542959
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel
>
> Committed: https://crrev.com/dc7207cc95e97078afea95e5084ea81a284f5d29
> Cr-Commit-Position: refs/heads/master@{#391204}

TBR=vmiura@chromium.org,piman@chromium.org,ericrk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=542959
Committed: https://crrev.com/5ffff49d496c8a651a3429bb9c6df0bf1d472397
Cr-Commit-Position: refs/heads/master@{#391218}

[Mathieu, 2016-05-03 13:24:40]

Created Revert of Enable GPU Raster on OSX

[commit-bot: I haz the power, 2016-05-03 13:24:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1945653002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1945653002/1

[commit-bot: I haz the power, 2016-05-03 13:25:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-03 13:26:35]

Description was changed from

==========
Revert of Enable GPU Raster on OSX (patchset #3 id:40001 of
https://codereview.chromium.org/1881053003/ )

Reason for revert:
Failures on all webkit mac bots:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.9/builds...

Original issue's description:
> This change enables GPU Raster on OSX.
> 
> I've compiled a bit of benchmark data to support turning this on -
>
https://docs.google.com/a/google.com/document/d/1RPEnillJOaOKW47t9DYuttQkvWDo...
> Still filling in more data, but I'm pretty happy with the results so far. In
> a number of cases we have a performance win, and in most cases we have a power
win.
> 
> Checking this in now will give us a long canary period before the next branch
> point to catch any issues.
> 
> BUG=542959
>
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Committed: https://crrev.com/dc7207cc95e97078afea95e5084ea81a284f5d29
> Cr-Commit-Position: refs/heads/master@{#391204}

TBR=vmiura@chromium.org,piman@chromium.org,ericrk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=542959
==========

to

==========
Revert of Enable GPU Raster on OSX (patchset #3 id:40001 of
https://codereview.chromium.org/1881053003/ )

Reason for revert:
Failures on all webkit mac bots:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac10.9/builds...

Original issue's description:
> This change enables GPU Raster on OSX.
>
> I've compiled a bit of benchmark data to support turning this on -
>
https://docs.google.com/a/google.com/document/d/1RPEnillJOaOKW47t9DYuttQkvWDo...
> Still filling in more data, but I'm pretty happy with the results so far. In
> a number of cases we have a performance win, and in most cases we have a power
win.
>
> Checking this in now will give us a long canary period before the next branch
> point to catch any issues.
>
> BUG=542959
>
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_optional_gpu_tests_rel;tryserver.chromium.mac:mac_optional_gpu_tests_rel;tryserver.chromium.win:win_optional_gpu_tests_rel
>
> Committed: https://crrev.com/dc7207cc95e97078afea95e5084ea81a284f5d29
> Cr-Commit-Position: refs/heads/master@{#391204}

TBR=vmiura@chromium.org,piman@chromium.org,ericrk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=542959

Committed: https://crrev.com/5ffff49d496c8a651a3429bb9c6df0bf1d472397
Cr-Commit-Position: refs/heads/master@{#391218}
==========

[commit-bot: I haz the power, 2016-05-03 13:26:36]

Patchset 1 (id:??) landed as
https://crrev.com/5ffff49d496c8a651a3429bb9c6df0bf1d472397
Cr-Commit-Position: refs/heads/master@{#391218}