Moves PanelFrameView to common

ash/mus/non_client_frame_controller.cc

Index: ash/mus/non_client_frame_controller.cc
diff --git a/ash/mus/non_client_frame_controller.cc b/ash/mus/non_client_frame_controller.cc
index b0a804582f939b90d8603faa7624d6967446815b..b3bc8527b4cb9342debf23bce8e95ba1473e2e93 100644
--- a/ash/mus/non_client_frame_controller.cc
+++ b/ash/mus/non_client_frame_controller.cc
@@ -13,6 +13,7 @@
 #include "ash/common/ash_constants.h"
 #include "ash/common/ash_layout_constants.h"
 #include "ash/common/frame/custom_frame_view_ash.h"
+#include "ash/common/wm/panels/panel_frame_view.h"
 #include "ash/mus/bridge/wm_window_mus.h"
 #include "ash/mus/frame/custom_frame_view_mus.h"
 #include "ash/mus/frame/detached_title_area_renderer.h"
@@ -231,6 +232,8 @@ class WmNativeWidgetMus : public views::NativeWidgetMus {
         window(), window_manager_client_, GetNativeView()));
     if (ShouldRemoveStandardFrame(window()))
       return new EmptyDraggableNonClientFrameView();
+    if (GetWindowType(window()) == ui::mojom::WindowType::PANEL)
+      return new PanelFrameView(GetWidget(), PanelFrameView::FRAME_ASH);
     immersive_delegate_.reset(
         new ImmersiveFullscreenControllerDelegateMus(GetWidget(), window()));
     const bool enable_immersive =