Revert 32398 - Re-enable Cocoa event model for plugins
Revert 32398 - Re-enable Cocoa event model for plugins

BUG=28159
TEST=Flash 10.1 pre-release should use Cocoa event model (which currently means playback stalls when there are no mouse events coming in).

Review URL: http://codereview.chromium.org/399079

TBR=amanda@chromium.org
Review URL: http://codereview.chromium.org/402064

git-svn-id: http://src.chromium.org/svn/trunk/src@32399 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: de485df9bcf5c00209f749c534cc5d009ec33a98
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