ash uber tray: Make it work in ash_shell, and a couple more fixes.

ash/wm/activation_controller.cc

Index: ash/wm/activation_controller.cc
diff --git a/ash/wm/activation_controller.cc b/ash/wm/activation_controller.cc
index c90846ad5a5aa24b3709d03d8936c39075a0e262..052d407d190a0a3edf32ef455d34bcf25c81a10a 100644
--- a/ash/wm/activation_controller.cc
+++ b/ash/wm/activation_controller.cc
@@ -35,7 +35,8 @@ bool SupportsChildActivation(aura::Window* window) {
          window->id() == kShellWindowId_StatusContainer ||
          window->id() == kShellWindowId_LauncherContainer ||
          window->id() == kShellWindowId_LockScreenContainer ||
-         window->id() == kShellWindowId_LockSystemModalContainer;
+         window->id() == kShellWindowId_LockSystemModalContainer ||
+         window->id() == kShellWindowId_SettingBubbleContainer;
 }
 
 // Returns true if |window| can be activated or deactivated.