Add a chromebot crash in DownloadFileManager::UpdateDownload to exceptions.
Add a chromebot crash in DownloadFileManager::UpdateDownload to exceptions.

BUG=http://crbug.com/19414
TBR=jam
Review URL: http://codereview.chromium.org/171021

git-svn-id: http://src.chromium.org/svn/trunk/src@23518 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 9c8d28d9bf18237c3dd355f187af213695e5771e
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