This reverts commit 931b6c6a.

This was causing our try bots to fail on DEPS changes.

After applying the patch successfully, apply_issue.py tries to run gclient sync to get the updated DEPS, resulting in this error:
src (ERROR)
----------------------------------------
[0:00:00] Started.
----------------------------------------
Error: 
____ src at origin/master
	Your index contains uncommitted changes
	Please commit, stash, or reset.

BUG=413326
TESTED=Manually: https://paste.googleplex.com/6375653263802368

Review URL: https://codereview.chromium.org/563873002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@291932 0039d316-1c4b-4281-b951-d872f2087c98