GitLab

Reason for revert:
Caused compile error on Blink GPU Mac Builder:
http://build.chromium.org/p/chromium.webkit/builders/GPU%20Mac%20Builder

Original issue's description:
> Remove disable-app-list-voice-search flag.
> 
> BUG=367341
> R=xiyuan@chromium.org
> TEST=compile
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281904

TBR=xiyuan@chromium.org,mukai@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=367341

Review URL: https://codereview.chromium.org/379673003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@281908 0039d316-1c4b-4281-b951-d872f2087c98