Make drag-to-activate session history dropdowns less sensitive. Patch from viettrunglu@gmail.com BUG=19273 TEST=Make your mouse really sensitive; see if you can accidentally activate the back/forward history dropdowns.
Make drag-to-activate session history dropdowns less sensitive. Patch from viettrunglu@gmail.com
BUG=19273
TEST=Make your mouse really sensitive; see if you can accidentally activate the
back/forward history dropdowns.

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@23334 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