Update the selected resolution to the resolution that is actually selected.

BUG=309720
TEST=covered by test. Also tested manually
R=mukai@chromium.org

Review URL: https://codereview.chromium.org/106673003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243627 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243627
Disable BackgroundKeepaliveIdle test due to flaky ASAN failures.

NOTRY=true
BUG=332440

Review URL: https://codereview.chromium.org/129093002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243628 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243628