Minor chromedriver bug fix: check the application directory, not the executable.
Minor chromedriver bug fix: check the application directory, not the executable.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/6720059
Patch from Jason Leyba <jleyba@chromium.org>.

git-svn-id: http://src.chromium.org/svn/trunk/src@81960 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: c2da48dca96b843b019347fc44df94c6c0c4b99d
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