Add method GetKeyFromSystem to WiFiService on Windows and Mac.

BUG=328960

Review URL: https://codereview.chromium.org/156943002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251131 0039d316-1c4b-4281-b951-d872f2087c98
Do not trigger CrossSiteResourceHandler for streams or user certs.

When a resource request gets pre-empted in favor of either a stream or user
certificate installation, do not trigger CrossSiteResourceHandler behavior.

Add a regression test to ensure the DCHECK does not fire.

BUG=342999

Review URL: https://codereview.chromium.org/161003002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251132 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251132
Makes the hint text darker for lower rows.


BUG=332073

Review URL: https://codereview.chromium.org/163413006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251133 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251133