chromeos: converts WindowResizer to aura::Window

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 db381c03d8dbffef91479113bd90886444fd9934..59ce4291072b8224b20148fefa53f1002ec92401 100644
--- a/ash/frame/caption_buttons/frame_size_button.cc
+++ b/ash/frame/caption_buttons/frame_size_button.cc
@@ -11,8 +11,10 @@
 #include "ash/wm/workspace/phantom_window_controller.h"
 #include "ash/wm_window.h"
 #include "base/i18n/rtl.h"
+#include "ui/aura/window.h"
 #include "ui/gfx/geometry/vector2d.h"
 #include "ui/views/widget/widget.h"
+#include "ui/wm/core/coordinate_conversion.h"
 
 namespace ash {
 
@@ -210,15 +212,17 @@ void FrameSizeButton::UpdateSnapType(const ui::LocatedEvent& event) {
   }
 
   if (snap_type_ == SNAP_LEFT || snap_type_ == SNAP_RIGHT) {
-    WmWindow* window = WmWindow::Get(frame_->GetNativeWindow());
-    if (!phantom_window_controller_.get())
-      phantom_window_controller_.reset(new PhantomWindowController(window));
-    gfx::Rect phantom_bounds_in_parent =
+    aura::Window* window = frame_->GetNativeWindow();
+    if (!phantom_window_controller_.get()) {
+      phantom_window_controller_.reset(
+          new PhantomWindowController(WmWindow::Get(window)));
+    }
+    gfx::Rect phantom_bounds_in_screen =
         (snap_type_ == SNAP_LEFT)
             ? wm::GetDefaultLeftSnappedWindowBoundsInParent(window)
             : wm::GetDefaultRightSnappedWindowBoundsInParent(window);
-    phantom_window_controller_->Show(
-        window->GetParent()->ConvertRectToScreen(phantom_bounds_in_parent));
+    ::wm::ConvertRectToScreen(window->parent(), &phantom_bounds_in_screen);
+    phantom_window_controller_->Show(phantom_bounds_in_screen);
   } else {
     phantom_window_controller_.reset();
   }