Revert of Roll ANGLE b4533de..6a6b09c

Revert of Roll ANGLE b4533de..6a6b09c (patchset #1 id:1 of https://codereview.chromium.org/2626073008/ )

Reason for revert:
Breaks a all Clang ToT bots.

BUG=681912
Original issue's description:
> Roll ANGLE b4533de..6a6b09c
> 
> https://chromium.googlesource.com/angle/angle.git/+log/b4533de..6a6b09c
> 
> BUG=
> 
> TBR=geofflang@chromium.org
> 
> TEST=bots
> 
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2626073008
> Cr-Commit-Position: refs/heads/master@{#443563}
> Committed: https://chromium.googlesource.com/chromium/src/+/9b8d527fa720a2b07a154134ec740b69f0622e90

TBR=geofflang@chromium.org,jmadill@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=

[krasin1, 2017-01-17 19:37:41]

The CQ bit was checked by krasin@chromium.org

[krasin1, 2017-01-17 19:37:41]

Created Revert of Roll ANGLE b4533de..6a6b09c

[commit-bot: I haz the power, 2017-01-17 19:38:29]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Jamie Madill, 2017-01-17 19:41:36]

The CQ bit was unchecked by jmadill@chromium.org

[Jamie Madill, 2017-01-17 19:41:53]

not lgtm, let's fix this without breaking the main chromium bots sizes check.

[krasin1, 2017-01-17 19:45:59]

The CQ bit was unchecked by krasin@chromium.org