Include PID and UID in offscreen hierarchy dumping

Fixes: 374625249
Test: adb shell su root dumpsys SurfaceFlinger
Flag: EXEMPT bugfix
Change-Id: I725aee1405f29c7e1db61d939cbd4abb8e3bc3d9
diff --git a/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp b/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp
index d709530..da536b6 100644
--- a/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp
+++ b/services/surfaceflinger/FrontEnd/LayerHierarchy.cpp
@@ -166,7 +166,8 @@
             }
             out << "(Mirroring) ";
         }
-        out << *mLayer;
+
+        out << *mLayer << " pid=" << mLayer->ownerPid.val() << " uid=" << mLayer->ownerUid.val();
     }
 
     for (size_t i = 0; i < mChildren.size(); i++) {