Fix a bug where we can sometimes incorrectly decide a download is not an extension.
Fix a bug where we can sometimes incorrectly decide a download
is not an extension.

BUG=19340
TEST=See bug for details.

Review URL: http://codereview.chromium.org/170007

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@23474 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser