Make sure to fire menu items only once per key. Also, crash less.

Followup to http://codereview.chromium.org/293019 .

BUG=none
TEST=Open 2 tabs, go to first tab, go to google.com, make sure that web has focus, hit cmd-w. Chrome shouldn't crash.

Review URL: http://codereview.chromium.org/372034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31320 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed