Removes most aura dependencies from WindowResizer

ash/test/ui_controls_factory_ash.cc

Index: ash/test/ui_controls_factory_ash.cc
diff --git a/ash/test/ui_controls_factory_ash.cc b/ash/test/ui_controls_factory_ash.cc
index 2ac98c85af60ead2ff62b0c4fc6f6cb701d284b0..af690d08e43ff2c3a92cbcc3a741c8618786058d 100644
--- a/ash/test/ui_controls_factory_ash.cc
+++ b/ash/test/ui_controls_factory_ash.cc
@@ -4,7 +4,8 @@
 
 #include "ash/shell.h"
 #include "ash/shell_factory.h"
-#include "ash/wm/coordinate_conversion.h"
+#include "ash/wm/aura/wm_window_aura.h"
+#include "ash/wm/common/root_window_finder.h"
 #include "ash/wm/window_properties.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/screen_position_client.h"
@@ -45,7 +46,8 @@ UIControlsAura* GetUIControlsForRootWindow(aura::Window* root_window) {
 // Returns the UIControls object for the RootWindow at |point_in_screen|.
 UIControlsAura* GetUIControlsAt(const gfx::Point& point_in_screen) {
   // TODO(mazda): Support the case passive grab is taken.
-  return GetUIControlsForRootWindow(ash::wm::GetRootWindowAt(point_in_screen));
+  return GetUIControlsForRootWindow(wm::WmWindowAura::GetAuraWindow(
+      ash::wm::GetRootWindowAt(point_in_screen)));
 }
 
 }  // namespace