aw: Disable flaky AwZoomTest testMagnification

Closed the tree twice just now. Details in bug.

BUG=340327
NOTRY=true
TBR=mnaganov

Review URL: https://codereview.chromium.org/150703004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248535 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248535
Blink roll 166302:166315

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=166303:166315&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/150093007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248537 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248538 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248538