Certificate Transparency: Add UMA for SCT presence, type.

Measure the following aspects for Certificate Transparency:
* Number of Signed Certificate Timestamps (SCTs) available with each certificate.
* The distribution of SCTs' origins.
* The distribution of SCTs' validation status.

Measurements are taken each time a certificate is validated, regardless of the resource type served over this SSL connection.

BUG=309578

Review URL: https://codereview.chromium.org/133713002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246312 0039d316-1c4b-4281-b951-d872f2087c98
Use an alternate mechanism for CreateFile calls in Chrome

BUG=334379

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=245464

Review URL: https://codereview.chromium.org/138593004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246313 0039d316-1c4b-4281-b951-d872f2087c98
roll skia DEPS to 13135

Chromium base revision: 246103 / 79817e1b
Old Skia revision: 13129
New Skia revision: 13135
Control CL: https://codereview.chromium.org/143823006

This CL was created by Skia's roll_deps.py script.

R=rmistry@google.com

Review URL: https://codereview.chromium.org/132233034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246314 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246315 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246315