Introduces the dialog UI to confirm HDCP verification.

BUG=294452
R=dkrahn@chromium.org, mnissler@chromium.org, msw@chromium.org
TEST=manually

Review URL: https://codereview.chromium.org/24252009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226212 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226212
Roll Skia DEPS to r11542

R=rmistry@google.com

Review URL: https://codereview.chromium.org/25360003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226213 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226214 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226213
SVN changes up to revision 226214