Have Notifications appear over docked windows

ash/shelf/shelf_layout_manager.h

Index: ash/shelf/shelf_layout_manager.h
diff --git a/ash/shelf/shelf_layout_manager.h b/ash/shelf/shelf_layout_manager.h
index 6f915479105c2db90471deff3a67e8d4e801d93d..8e81a612ef64a4c67862cd29852e5cc15dab8c52 100644
--- a/ash/shelf/shelf_layout_manager.h
+++ b/ash/shelf/shelf_layout_manager.h
@@ -121,6 +121,9 @@ class ASH_EXPORT ShelfLayoutManager
   // Returns the docked area bounds.
   const gfx::Rect& dock_bounds() const { return dock_bounds_; }
 
+  // Returns the bounds within the root window not occupied by the shelf.
+  const gfx::Rect& non_shelf_bounds() const { return non_shelf_bounds_; }
+
   // Stops any animations and sets the bounds of the shelf and status
   // widgets.
   void LayoutShelf();
@@ -399,6 +402,9 @@ class ASH_EXPORT ShelfLayoutManager
   // The bounds of the dock.
   gfx::Rect dock_bounds_;
 
+  // The bounds within the root window not occupied by the shelf.
+  gfx::Rect non_shelf_bounds_;
+
   // The show hide animation duration override or 0 for default.
   int duration_override_in_ms_;