Revert of Enable touch text selection by default on desktop Aura

Revert of Enable touch text selection by default on desktop Aura (https://codereview.chromium.org/305423003/)

Reason for revert:
This change has broken two Blink layout-tests, context-menu-on-long-press.html
and right-click-gestures-set-cursor-at-correct-position.html.

More relevant information, failed runs and output is available in the bug.

BUG=381152
Original issue's description:
> Enable touch text selection by default on desktop Aura
> 
> --disable-touch-editing can be used to disable touch text selection.
> 
> BUG=304872
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274972

TBR=sky@chromium.org,mohsen@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=304872
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=275138

[Peter Beverloo, 2014-06-05 13:48:48]

Created Revert of Enable touch text selection by default on desktop Aura

[Peter Beverloo, 2014-06-05 13:50:56]

The CQ bit was checked by peter@chromium.org

[commit-bot: I haz the power, 2014-06-05 13:53:05]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/peter@chromium.org/313263004/1

[Peter Beverloo, 2014-06-05 15:37:13]

The CQ bit was unchecked by peter@chromium.org

[Peter Beverloo, 2014-06-05 15:37:25]

The CQ bit was checked by peter@chromium.org

[commit-bot: I haz the power, 2014-06-05 15:38:20]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/peter@chromium.org/313263004/1

[commit-bot: I haz the power, 2014-06-05 15:39:52]

Change committed as 275138