mash: Move directly linked NewWindowDelegate to mojom::NewWindowClient.

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 1b9a2c670c811eea3f07a94c938e1219e69ebd97..bfd04e96bc5b522a7de37a3458e821201a23d896 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -46,7 +46,6 @@
 #include "chrome/browser/ui/app_list/app_list_view_delegate.h"
 #include "chrome/browser/ui/ash/app_list/app_list_service_ash.h"
 #include "chrome/browser/ui/ash/chrome_keyboard_ui.h"
-#include "chrome/browser/ui/ash/chrome_new_window_delegate.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller_impl.h"
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
 #include "chrome/browser/ui/ash/media_delegate_chromeos.h"
@@ -502,10 +501,6 @@ ash::AccessibilityDelegate* ChromeShellDelegate::CreateAccessibilityDelegate() {
   return new AccessibilityDelegateImpl;
 }
 
-ash::NewWindowDelegate* ChromeShellDelegate::CreateNewWindowDelegate() {
-  return new ChromeNewWindowDelegate;
-}
-
 ash::MediaDelegate* ChromeShellDelegate::CreateMediaDelegate() {
   return new MediaDelegateChromeOS;
 }