Crashers from the field indicate the navigation entry can be NULL. This is not expected and not clear how this happen.
Working-around the crasher.

BUG=http://crbug.com/15605
TEST=None



Review URL: http://codereview.chromium.org/150185

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20037 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed