Files.app: Open Audio/Video player in the active desktop.

This CL adds displayedId parameter to launch(Audio|Video)Player functions, and
modify the caller to pass the current window's displayed ID.

BUG=341041
TEST=open the player from a teleported window.

Review URL: https://codereview.chromium.org/153653004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249610 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249610