Update policy signature verification to include policy domain.

CloudPolicyValidator now accpets a "domain" parameter which is used to generate
verification signatures for public keys.

Broke out CloudPolicyValidator cached-key verification code into a separate
validation function: ValidateCachedKey().

Added new hard-coded signatures for our PolicyBuilder test keys for the
example.com domain.

BUG=275291
TBR=rogerta@chromium.org

Review URL: https://codereview.chromium.org/143183007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251292 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251292
Remove gesture.config_is_trustworthy pref

gesture.config_is_trustworthy pref is a temporary flag added in M30 to
do a one-time wipe of gesture config prefs. After two milestones, the
prefs should have been wiped for a good majority of users. So, the flag
is not needed anymore.

BUG=269292

Review URL: https://codereview.chromium.org/162193002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251293 0039d316-1c4b-4281-b951-d872f2087c98
Roll Skia DEPS to r13441

R=rmistry@google.com

Review URL: https://codereview.chromium.org/164253004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251294 0039d316-1c4b-4281-b951-d872f2087c98
Add a second experiment group for the iOS NTP experiment.

BUG=309077
TEST=None

Review URL: https://codereview.chromium.org/157973003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251295 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251296 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251296
Added tests for views flavor of MediaGalleriesDialogTest.

BUG=

Review URL: https://codereview.chromium.org/134163014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251297 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251297