Use a strongly typed Pid in WindowInfo

Bug: 286428012
Test: presubmit
Change-Id: I6a3572ff10b259feae74863c0203bb5f085f233f
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index a5d7ce7..5a010e8 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -2453,7 +2453,7 @@
     if (!hasInputInfo()) {
         mDrawingState.inputInfo.name = getName();
         mDrawingState.inputInfo.ownerUid = gui::Uid{mOwnerUid};
-        mDrawingState.inputInfo.ownerPid = mOwnerPid;
+        mDrawingState.inputInfo.ownerPid = gui::Pid{mOwnerPid};
         mDrawingState.inputInfo.inputConfig |= WindowInfo::InputConfig::NO_INPUT_CHANNEL;
         mDrawingState.inputInfo.displayId = getLayerStack().id;
     }