Added wm::IsWindowUserPositionable(...) method in window_util.h.

ash/accelerators/accelerator_controller.cc

Index: ash/accelerators/accelerator_controller.cc
diff --git a/ash/accelerators/accelerator_controller.cc b/ash/accelerators/accelerator_controller.cc
index 5a6dba781a213a8716945bd23ea31ceb75b55dd3..6eb68a3921409ddb09a7388551f83661ff71e866 100644
--- a/ash/accelerators/accelerator_controller.cc
+++ b/ash/accelerators/accelerator_controller.cc
@@ -464,9 +464,7 @@ bool CanHandleWindowSnapOrDock() {
   wm::WindowState* window_state = wm::GetActiveWindowState();
   // Disable window snapping shortcut key for full screen window due to
   // http://crbug.com/135487.
-  return (window_state &&
-          (window_state->window()->type() == ui::wm::WINDOW_TYPE_NORMAL ||
-           window_state->window()->type() == ui::wm::WINDOW_TYPE_PANEL) &&
+  return (window_state && window_state->IsUserPositionable() &&
           !window_state->IsFullscreen());
 }