[ChromeOS] Fix the tiny app panel problem.
[ChromeOS] Fix the tiny app panel problem.

"closed-secions-bar" is under sections on ChromeOS instead of aligned to
bottom on other platforms.

BUG=chromium-os:12915
TEST=Verify fix for chromium-os:12915

Review URL: http://codereview.chromium.org/6612059

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@77579 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