cros: allow aura window not considered activatable for pointer event

ui/wm/core/focus_controller.h

Index: ui/wm/core/focus_controller.h
diff --git a/ui/wm/core/focus_controller.h b/ui/wm/core/focus_controller.h
index 85858cfa27e30c17770b5cc3c3717ff152f2635f..9693d7c31037d9264dc33220d9e802c7d6960d0a 100644
--- a/ui/wm/core/focus_controller.h
+++ b/ui/wm/core/focus_controller.h
@@ -116,7 +116,7 @@ class WM_EXPORT FocusController : public aura::client::ActivationClient,
   // Called when an attempt is made to focus or activate a window via an input
   // event targeted at that window. Rules determine the best focusable window
   // for the input window.
-  void WindowFocusedFromInputEvent(aura::Window* window);
+  void WindowFocusedFromInputEvent(aura::Window* window, ui::Event* event);

[sky, 2017/04/12 19:49:16]

Can you use const ui::Event& in all these functions? That makes it clear the
function shouldn't modify the value.

[Qiang(Joe) Xu, 2017/04/12 23:00:42]

done. I create another API that is bool CanFocusWindow(aura::Window* window,
const ui::Event& event) const;

So that any call places with CanFocusWindow(window) can still be used.

[sky, 2017/04/12 23:07:40]

Sorry, I gave you bad advice. I assumed the event was never null. If it can be
null then go back to what you had (only one CanFocusWindow).

[Qiang(Joe) Xu, 2017/04/13 01:41:51]

Done.

 
   aura::Window* active_window_;
   aura::Window* focused_window_;