Revert of Enable DirectComposition by default.

Revert of Enable DirectComposition by default. (patchset #2 id:20001 of https://codereview.chromium.org/1578453003/ )

Reason for revert:
This seems to break gles2_conform_test on win8 bots

Original issue's description:
> Enable DirectComposition by default.
>
> Chrome will now use DirectComposition where supported (Win8+ with d3d11 rendering). --disable-direct-composition can be specified to disable it, and a disable_direct_composition driver bug workaround type has been added.
>
> BUG=524838
>
> Committed: https://crrev.com/88b36341a5868273eeeb08d42047721e00f495d6
> Cr-Commit-Position: refs/heads/master@{#369289}

TBR=kbr@chromium.org,jbauman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=524838
Committed: https://crrev.com/e463401bc88116d770ba6ed209f9066a84155a4c
Cr-Commit-Position: refs/heads/master@{#369481}

[Zhenyao Mo, 2016-01-14 18:38:47]

Created Revert of Enable DirectComposition by default.

[commit-bot: I haz the power, 2016-01-14 18:39:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1573913009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1573913009/1

[commit-bot: I haz the power, 2016-01-14 18:43:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-14 18:44:18]

Description was changed from

==========
Revert of Enable DirectComposition by default. (patchset #2 id:20001 of
https://codereview.chromium.org/1578453003/ )

Reason for revert:
This seems to break gles2_conform_test on win8 bots

Original issue's description:
> Enable DirectComposition by default.
> 
> Chrome will now use DirectComposition where supported (Win8+ with d3d11
rendering). --disable-direct-composition can be specified to disable it, and a
disable_direct_composition driver bug workaround type has been added.
> 
> BUG=524838
> 
> Committed: https://crrev.com/88b36341a5868273eeeb08d42047721e00f495d6
> Cr-Commit-Position: refs/heads/master@{#369289}

TBR=kbr@chromium.org,jbauman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=524838
==========

to

==========
Revert of Enable DirectComposition by default. (patchset #2 id:20001 of
https://codereview.chromium.org/1578453003/ )

Reason for revert:
This seems to break gles2_conform_test on win8 bots

Original issue's description:
> Enable DirectComposition by default.
>
> Chrome will now use DirectComposition where supported (Win8+ with d3d11
rendering). --disable-direct-composition can be specified to disable it, and a
disable_direct_composition driver bug workaround type has been added.
>
> BUG=524838
>
> Committed: https://crrev.com/88b36341a5868273eeeb08d42047721e00f495d6
> Cr-Commit-Position: refs/heads/master@{#369289}

TBR=kbr@chromium.org,jbauman@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=524838

Committed: https://crrev.com/e463401bc88116d770ba6ed209f9066a84155a4c
Cr-Commit-Position: refs/heads/master@{#369481}
==========

[commit-bot: I haz the power, 2016-01-14 18:44:19]

Patchset 1 (id:??) landed as
https://crrev.com/e463401bc88116d770ba6ed209f9066a84155a4c
Cr-Commit-Position: refs/heads/master@{#369481}