Make sure an evil renderer can't mess up state of the clipboard, later causing an untrusted blob to be treated as a GdkPixmap.
Make sure an evil renderer can't mess up state of the clipboard, later causing
an untrusted blob to be treated as a GdkPixmap.

BUG=32014
TEST=NONE

Review URL: http://codereview.chromium.org/547014

git-svn-id: http://src.chromium.org/svn/trunk/src@35982 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 366f4c302ef7a3cf79a8fc07300d65808b095976
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