Add LockScreen method name for Chromium

We've been telling the browser to put up the lock screen
by broadcasting a DBus signal, which is wrong. Add a method
name for the session_manager to call instead.

BUG=chromium:341921
TEST=emerge system_api

Change-Id: I48c92b61cc4dadb161e0aacbcd42b9578f9f6367
Reviewed-on: https://chromium-review.googlesource.com/185348
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Daniel Erat <derat@chromium.org>
Commit-Queue: Chris Masone <cmasone@chromium.org>
1 file changed
tree: 05560cc6a4329794018b428a0f049988c4131b47
  1. constants/
  2. dbus/
  3. switches/
  4. README
  5. system_api.gyp