Remove usage of ws::Display in ws::UserDisplayManager.

services/ui/display/screen_manager_stub_internal.h

Index: services/ui/display/screen_manager_stub_internal.h
diff --git a/services/ui/display/screen_manager_stub_internal.h b/services/ui/display/screen_manager_stub_internal.h
index bda52eb8e4ad596393ec82c3f9ca9fb4eabf279c..9d278d7172e831f7a7918b39a283bc12172799f3 100644
--- a/services/ui/display/screen_manager_stub_internal.h
+++ b/services/ui/display/screen_manager_stub_internal.h
@@ -14,8 +14,7 @@
 namespace display {
 
 // ScreenManagerStubInternal provides the necessary functionality to configure a
-// fixed
-// 1024x768 display for non-ozone platforms.
+// fixed 1024x768 display for non-ozone platforms.
 class ScreenManagerStubInternal : public ScreenManager {
  public:
   ScreenManagerStubInternal();
@@ -29,7 +28,6 @@ class ScreenManagerStubInternal : public ScreenManager {
   void AddInterfaces(service_manager::InterfaceRegistry* registry) override;
   void Init(ScreenManagerDelegate* delegate) override;
   void RequestCloseDisplay(int64_t display_id) override;
-  int64_t GetPrimaryDisplayId() const override;
 
   // Sample display information.
   int64_t display_id_ = 1;