NTP: Fix click issues with about: and file: most visited thumbnails
NTP: Fix click issues with about: and file: most visited thumbnails

The reason these were not working correctly was that the handler for file: and
about: links was attached using capturing so the handler was always triggered.
This changes the events to use bubbling instead. This allows other listeners to
preventDefault before handleLinkClickOrMouseUp is reached.

BUG=72213
TEST=On the NTP
     Show most visited and visit some about: or file: URL enough for it to show up.
     Try to blacklist or pin the item.
     We should not navigate to the URL.

Review URL: http://codereview.chromium.org/6246146

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@74033 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