is sent out from IE in case Chrome is the default renderer for IE.

Fixes bug http://code.google.com/p/chromium/issues/detail?id=70138

BUG=70138
TEST=As described in the bug at this point. Unit tests for this will follow.


Review URL: http://codereview.chromium.org/6279006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71887 0039d316-1c4b-4281-b951-d872f2087c98