Let fn-left/right in find bar scroll to end of page.
Let fn-left/right in find bar scroll to end of page.

BUG=none
TEST=Open page with scrollbar, open and focus find bar. Hit fn-right, it should scroll to the end of the page. Hit fn-left, it should scroll back up.

Review URL: http://codereview.chromium.org/246084

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@28249 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