Fix the problem that a Save As dialog pops up on drag-out when "Ask where to save each file before downloading" option is checked. 
Fix the problem that a Save As dialog pops up on drag-out when "Ask where to save each file before downloading" option is checked. 

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/1050006

git-svn-id: http://src.chromium.org/svn/trunk/src@41962 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 8aa2b6d38ee5028dbdb538ea8a48b4677026407b
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser