Update/repair legacy gears web app shortcuts
Update/repair legacy gears web app shortcuts

r34332 has a bug that web app data dir could be missing for legacy gears
shortcut. The fix is to make sure the data dir exists.

BUG=8539
TEST=Create a legacy gears web app shortcuts and then update to a version with this fix and launching chrome should update the shortcuts with new icon locations.

Review URL: http://codereview.chromium.org/551008

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@36146 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