Switching getting/dismissing cards to new protocol.

BUG=164227
TEST=No

Review URL: https://codereview.chromium.org/24924002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227817 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227817