Fixing problem with the maximize mode where MultiProfile windows do not get properly handled

ash/wm/maximize_mode/maximize_mode_controller.h

Index: ash/wm/maximize_mode/maximize_mode_controller.h
diff --git a/ash/wm/maximize_mode/maximize_mode_controller.h b/ash/wm/maximize_mode/maximize_mode_controller.h
index 54db3f3a48539de4f53fb4781960be6b52876918..07d05d8cdd24a6bdf4e714407570e7d0b6f54a9a 100644
--- a/ash/wm/maximize_mode/maximize_mode_controller.h
+++ b/ash/wm/maximize_mode/maximize_mode_controller.h
@@ -82,6 +82,12 @@ class ASH_EXPORT MaximizeModeController : public AccelerometerObserver,
   // Test if the MaximizeModeWindowManager is enabled or not.
   bool IsMaximizeModeWindowManagerEnabled() const;
 
+  // Add a special window to the MaximizeModeWindowManager for tracking. This is
+  // only required for special windows which are handled by other window
+  // managers like the |MultiUserWindowManager|.
+  // If the maximize mode is not enabled no action will be performed.
+  void AddWindow(aura::Window* window);
+
   // TODO(jonross): move this into the destructor. Currently separated as
   // ShellOberver notifies of maximize mode ending, and the observers end up
   // attempting to access MaximizeModeController via the Shell. If done in