Use a strongly typed Pid in WindowInfo

Bug: 286428012
Test: presubmit
Change-Id: I6a3572ff10b259feae74863c0203bb5f085f233f
diff --git a/libs/gui/tests/WindowInfo_test.cpp b/libs/gui/tests/WindowInfo_test.cpp
index e3a629e..461fe4a 100644
--- a/libs/gui/tests/WindowInfo_test.cpp
+++ b/libs/gui/tests/WindowInfo_test.cpp
@@ -61,7 +61,7 @@
     i.alpha = 0.7;
     i.transform.set({0.4, -1, 100, 0.5, 0, 40, 0, 0, 1});
     i.touchOcclusionMode = TouchOcclusionMode::ALLOW;
-    i.ownerPid = 19;
+    i.ownerPid = gui::Pid{19};
     i.ownerUid = gui::Uid{24};
     i.packageName = "com.example.package";
     i.inputConfig = WindowInfo::InputConfig::NOT_FOCUSABLE;