mash: Reverse the responsibilities of the NewWindowClient.

chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h

Index: chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h
diff --git a/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h b/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h
index 239fa82066e863f99ef9e552fc10d8a448b89abb..8b7e06394555d5fb1a94ea0614f3c8c493cf9ffb 100644
--- a/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h
+++ b/chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.h
@@ -12,6 +12,7 @@
 
 class CastConfigClientMediaRouter;
 class ChromeLauncherControllerMus;
+class ChromeNewWindowClient;
 class ImmersiveContextMus;
 class ImmersiveHandlerFactoryMus;
 class SystemTrayClient;
@@ -33,6 +34,7 @@ class ChromeBrowserMainExtraPartsAsh : public ChromeBrowserMainExtraParts {
   std::unique_ptr<ImmersiveHandlerFactoryMus> immersive_handler_factory_;
   std::unique_ptr<ImmersiveContextMus> immersive_context_;
   std::unique_ptr<SystemTrayClient> system_tray_client_;
+  std::unique_ptr<ChromeNewWindowClient> new_window_client_;
   std::unique_ptr<VpnListForwarder> vpn_list_forwarder_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsAsh);