arc: Stop/start ARC++ kiosk app when maintenance session started/finished.

components/arc/kiosk/DEPS

Index: components/arc/kiosk/DEPS
diff --git a/third_party/WebKit/LayoutTests/fast/dom/HTMLScriptElement/resources/script-set-src-p4pass.js b/components/arc/kiosk/DEPS
similarity index 57%
copy from third_party/WebKit/LayoutTests/fast/dom/HTMLScriptElement/resources/script-set-src-p4pass.js
copy to components/arc/kiosk/DEPS
index 8ae11871b6c5581bd835bc2548e7e6943c3803b8..9f9b226a1692909c3b42990abaef9247be403634 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/HTMLScriptElement/resources/script-set-src-p4pass.js
+++ b/components/arc/kiosk/DEPS
@@ -1 +1,3 @@
-document.getElementById("p4").innerHTML = "PASS";
+include_rules = [
+  "+chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_service.h",

[Luis Héctor Chávez, 2016/11/30 19:11:54]

oh, I'm terribly sorry about this, I should have been moer explicit:

Code under components/ is not allowed to depend on chrome/, because it would
create a dependency cycle. In order to break the cycle one thing you can do is
introduce 

class Delegate {
 public:
  virtual ~Delegate() = default;
  virtual void MaintenanceSessionCreated() = 0;
  virtual void MaintenanceSessionFinished() = 0;
}

in the ArcKioskBridge, and that delegate to the constructor of ArcKioskBridge.
You can make ArcKioskAppService implement that Delegate. You can then remove the
code from ArcAppListPrefs that creates (and holds) the reference to
ArcKioskAppService, and instead have the ArcServiceLauncher create the
ArcKioskBridge with the same condition it has right now:
https://cs.chromium.org/chromium/src/chrome/browser/ui/app_list/arc/arc_app_l...

[Sergey Poromov, 2016/12/01 19:04:59]

Done.

+]