Keep scrollbars (etc.) active upon pulling down menu extra.
Keep scrollbars (etc.) active upon pulling down menu extra.

Patch by viettrungluu.

BUG=http://crbug.com/17990
TEST=Go to a window with scrollbar and pull down menu extra; also check what
happens when moving around between different apps and different Chromium
windows.

Review URL: http://codereview.chromium.org/159864


git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@22421 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