Observe keyboard notifications in docked layout

ash/wm/dock/docked_window_layout_manager.cc

Index: ash/wm/dock/docked_window_layout_manager.cc
diff --git a/ash/wm/dock/docked_window_layout_manager.cc b/ash/wm/dock/docked_window_layout_manager.cc
index 27679ff6fa0852cbe3bc8a9a0ae5dd8ea6de68c5..ad2a9130808b856a44ccf9b9e3d35f473c9c1ad9 100644
--- a/ash/wm/dock/docked_window_layout_manager.cc
+++ b/ash/wm/dock/docked_window_layout_manager.cc
@@ -873,6 +873,7 @@ void DockedWindowLayoutManager::OnKeyboardBoundsChanging(
     const gfx::Rect& keyboard_bounds) {
   // This bounds change will have caused a change to the Shelf which does not
   // propagate automatically to this class, so manually recalculate bounds.
+  Relayout();
   UpdateDockBounds();
 }