Moves management of transients out of Window

ui/views/corewm/focus_controller.cc

Index: ui/views/corewm/focus_controller.cc
diff --git a/ui/views/corewm/focus_controller.cc b/ui/views/corewm/focus_controller.cc
index 8c05ac26f324454016ad66d05224304424f5c2c8..c92428a735ad87a37c8178829a8363d6bc989e1c 100644
--- a/ui/views/corewm/focus_controller.cc
+++ b/ui/views/corewm/focus_controller.cc
@@ -12,6 +12,7 @@
 #include "ui/aura/env.h"
 #include "ui/events/event.h"
 #include "ui/views/corewm/focus_rules.h"
+#include "ui/views/corewm/transient_window_manager.h"
 
 namespace views {
 namespace corewm {
@@ -24,10 +25,10 @@ void StackTransientParentsBelowModalWindow(aura::Window* window) {
   if (window->GetProperty(aura::client::kModalKey) != ui::MODAL_TYPE_WINDOW)
     return;
 
-  aura::Window* transient_parent = window->transient_parent();
+  aura::Window* transient_parent = views::corewm::GetTransientParent(window);
   while (transient_parent) {
     transient_parent->parent()->StackChildAtTop(transient_parent);
-    transient_parent = transient_parent->transient_parent();
+    transient_parent = views::corewm::GetTransientParent(transient_parent);
   }
 }
 
@@ -36,7 +37,7 @@ void StackWindowLayerAbove(aura::Window* window, aura::Window* relative_to) {
   // Stack |window| above the last transient child of |relative_to| that shares
   // the same parent.
   const aura::Window::Windows& window_transients(
-      relative_to->transient_children());
+      GetTransientChildren(relative_to));
   for (aura::Window::Windows::const_iterator i = window_transients.begin();
        i != window_transients.end(); ++i) {
     aura::Window* transient = *i;