Makes PhantonWindowController use ash/wm/common types

ash/frame/caption_buttons/frame_size_button.cc

Index: ash/frame/caption_buttons/frame_size_button.cc
diff --git a/ash/frame/caption_buttons/frame_size_button.cc b/ash/frame/caption_buttons/frame_size_button.cc
index 7426c57cd20ce8fc670a97258f20da19d5ef4b3e..756f87472e6b4ecc4e257bee6334e748ee703460 100644
--- a/ash/frame/caption_buttons/frame_size_button.cc
+++ b/ash/frame/caption_buttons/frame_size_button.cc
@@ -223,7 +223,8 @@ void FrameSizeButton::UpdateSnapType(const ui::LocatedEvent& event) {
   if (snap_type_ == SNAP_LEFT || snap_type_ == SNAP_RIGHT) {
     aura::Window* window = frame_->GetNativeWindow();
     if (!phantom_window_controller_.get()) {
-      phantom_window_controller_.reset(new PhantomWindowController(window));
+      phantom_window_controller_.reset(
+          new PhantomWindowController(wm::WmWindowAura::Get(window)));
     }
     gfx::Rect phantom_bounds_in_parent =
         (snap_type_ == SNAP_LEFT)