NaCl: Update to use new embedding interface provided by chrome_main.h

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3734
BUG=https://code.google.com/p/nativeclient/issues/detail?id=2832

Review URL: https://codereview.chromium.org/137623018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249370 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249370
Files.app: Open the span windows in the active desktop.

This CL lets Files.app handles the active desktop in open-window command.

BUG=337778, 340950
TEST=manually

Review URL: https://codereview.chromium.org/153553004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249371 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249371