Stop tracking a drag after the user drops the dragged item.
Stop tracking a drag after the user drops the dragged item.

BUG=44407
TEST=Perform the steps outlined in the bug and verify that after step #5 the folders are no longer still active.

Review URL: http://codereview.chromium.org/2849026

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@51132 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