Allows tab dragging when maximized on aura. To fix it I made it so

ash/wm/window_resizer.cc

Index: ash/wm/window_resizer.cc
diff --git a/ash/wm/window_resizer.cc b/ash/wm/window_resizer.cc
index e2838e989209101cb0f6b81b14bce3a301787fd5..2557a929f81472476eb19416b5683850413235a6 100644
--- a/ash/wm/window_resizer.cc
+++ b/ash/wm/window_resizer.cc
@@ -106,13 +106,6 @@ gfx::Point ConvertPointToParent(aura::Window* window,
   return result;
 }
 
-bool IsNormalWindow(aura::Window* window) {
-  return window->GetProperty(aura::client::kShowStateKey) ==
-          ui::SHOW_STATE_NORMAL ||
-      window->GetProperty(aura::client::kShowStateKey) ==
-          ui::SHOW_STATE_DEFAULT;
-}
-
 }  // namespace
 
 // static
@@ -142,8 +135,7 @@ WindowResizer::WindowResizer(aura::Window* window,
           GetPositionChangeDirectionForWindowComponent(window_component_)),
       size_change_direction_(
           GetSizeChangeDirectionForWindowComponent(window_component_)),
-      is_resizable_(bounds_change_ != kBoundsChangeDirection_None &&
-                    IsNormalWindow(window)),
+      is_resizable_(bounds_change_ != kBoundsChangeDirection_None),
       grid_size_(grid_size),
       did_move_or_resize_(false),
       root_filter_(NULL) {