[DEVICES PAGE] Disable "register" button and show login promo in overlay

This should remove an issue with users who are logged in via cookies but not
logged into chrome clicking on register promos (which will show the registration
overlay which previously assumed you were already logged into chrome).

BUG=326718

Review URL: https://codereview.chromium.org/144023004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247508 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247508
Blink roll 165883:165934

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=165884:165934&mode=html
TBR=jchaffraix@chromium.org
BUG=

Review URL: https://codereview.chromium.org/145063004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247509 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247510 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247510
Correctly test for canonicalized path in the CreateNamedPipe policy engine.

BUG=334897
TEST=sbox_integration_tests.exe

Review URL: https://codereview.chromium.org/145553007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247511 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247511