Improve WorkspaceWindowResizer::CompleteDrag() so that the function moves the window to a root windo

ui/aura/window.h

Index: ui/aura/window.h
diff --git a/ui/aura/window.h b/ui/aura/window.h
index 58a0f53bcd712c8ccc3505785f904ebc35d6aae3..c49e0733aef15f778625eafc8bff1f80cb4fd01e 100644
--- a/ui/aura/window.h
+++ b/ui/aura/window.h
@@ -28,6 +28,10 @@
 
 class SkCanvas;
 
+namespace gfx {
+class Display;
+}
+
 namespace ui {
 class Layer;
 class Texture;
@@ -154,7 +158,8 @@ class AURA_EXPORT Window : public ui::LayerDelegate,
 
   // Changes the bounds of the window in the screen coordintates.
   // If present, the window's parent's LayoutManager may adjust the bounds.
-  void SetBoundsInScreen(const gfx::Rect& new_bounds_in_screen_coords);
+  void SetBoundsInScreen(const gfx::Rect& new_bounds_in_screen_coords,
+                         const gfx::Display& dst_display);
 
   // Returns the target bounds of the window. If the window's layer is
   // not animating, it simply returns the current bounds.