Fix issue 580 that JavaScript cannot talk to Java applets.
Fix issue 580 that JavaScript cannot talk to Java applets.

The cause was that the DOM binding code didn't treat HTMLAppletElement as a plugin element.

I couldn't add a layout test because it requires Java plugin installed to run.


Review URL: http://codereview.chromium.org/1900

git-svn-id: http://src.chromium.org/svn/trunk/src@2006 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 021ef62a5ce33a199f22f4a2e6a5d7c6852e67c3
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