Fix display id type in long press affordance handler. Currently, the affordance
does not show up because the display id gets mangled due to mismatching type.

BUG=155523


Review URL: https://chromiumcodereview.appspot.com/11189005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@162219 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed