mash: Port mojo:ash_sysui's ContextMenuMus to mojo:ash.

components/arc/intent_helper/arc_intent_helper_bridge.cc

Index: components/arc/intent_helper/arc_intent_helper_bridge.cc
diff --git a/components/arc/intent_helper/arc_intent_helper_bridge.cc b/components/arc/intent_helper/arc_intent_helper_bridge.cc
index 162ea38e14ac7f6c651cba01acf824b7f6eaf401..64176dde1c09fb92f4d975f9b5d73ef6f534b039 100644
--- a/components/arc/intent_helper/arc_intent_helper_bridge.cc
+++ b/components/arc/intent_helper/arc_intent_helper_bridge.cc
@@ -9,8 +9,8 @@
 
 #include "ash/common/new_window_delegate.h"
 #include "ash/common/shell_delegate.h"
+#include "ash/common/wallpaper/wallpaper_delegate.h"
 #include "ash/common/wm_shell.h"
-#include "ash/desktop_background/user_wallpaper_delegate.h"
 #include "ash/shell.h"
 #include "base/memory/weak_ptr.h"
 #include "components/arc/intent_helper/activity_icon_loader.h"
@@ -82,7 +82,7 @@ void ArcIntentHelperBridge::OnOpenUrl(const mojo::String& url) {
 
 void ArcIntentHelperBridge::OpenWallpaperPicker() {
   DCHECK(thread_checker_.CalledOnValidThread());
-  ash::Shell::GetInstance()->user_wallpaper_delegate()->OpenSetWallpaperPage();
+  ash::WmShell::Get()->wallpaper_delegate()->OpenSetWallpaperPage();
 }
 
 void ArcIntentHelperBridge::SetWallpaper(mojo::Array<uint8_t> jpeg_data) {