Mac: Use indices correctly in TabStripController to fix crash. Fix several instances of using controller indices instead of model indices. BUG=28325 TEST=See bug Review URL: http://codereview.chromium.org/506022
Mac: Use indices correctly in TabStripController to fix crash. Fix several instances of using controller indices instead of model indices.
BUG=28325
TEST=See bug
Review URL: http://codereview.chromium.org/506022

git-svn-id: http://src.chromium.org/svn/trunk/src@34836 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9d4efb1ba5878f2c8f9f2a651cb75da43d38127a
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser