Keep the SystemModalContainerEventHandler added

components/exo/touch.cc

Index: components/exo/touch.cc
diff --git a/components/exo/touch.cc b/components/exo/touch.cc
index 255072270964c5ae08db902ac498371300d6f4bb..7255aa6ea1a7bd585d007141a78294d928f1dfa1 100644
--- a/components/exo/touch.cc
+++ b/components/exo/touch.cc
@@ -46,6 +46,12 @@ Touch::~Touch() {
 // ui::EventHandler overrides:
 
 void Touch::OnTouchEvent(ui::TouchEvent* event) {
+  if (!ash::Shell::GetInstance()->CanWindowReceiveEvents(

[reveman, 2016/07/13 18:55:09]

Same short comment here

[hariank, 2016/07/13 23:27:22]

Done.

+          (aura::Window*)event->target())) {

[reveman, 2016/07/13 18:55:09]

use static_cast instead

[hariank, 2016/07/13 23:27:22]

Done.

+    event->StopPropagation();

[reveman, 2016/07/13 18:55:09]

Same question as for exo::Pointer. Should we be calling this?

+    return;
+  }
+
   switch (event->type()) {
     case ui::ET_TOUCH_PRESSED: {
       // Early out if event doesn't contain a valid target for touch device.