Validate incoming window properties.

ui/aura/mus/window_tree_client_unittest.cc

Index: ui/aura/mus/window_tree_client_unittest.cc
diff --git a/ui/aura/mus/window_tree_client_unittest.cc b/ui/aura/mus/window_tree_client_unittest.cc
index 8289b88a825ad8f775c58fafb359db73ce836169..126e3ad8416a3086f65e11d15906add63884f192 100644
--- a/ui/aura/mus/window_tree_client_unittest.cc
+++ b/ui/aura/mus/window_tree_client_unittest.cc
@@ -75,9 +75,15 @@ bool IsWindowHostVisible(Window* window) {
 
 // Register some test window properties for aura/mus conversion.
 void RegisterTestProperties(PropertyConverter* converter) {
-  converter->RegisterProperty(kTestPropertyKey1, kTestPropertyServerKey1);
-  converter->RegisterProperty(kTestPropertyKey2, kTestPropertyServerKey2);
-  converter->RegisterProperty(kTestPropertyKey3, kTestPropertyServerKey3);
+  converter->RegisterProperty(
+      kTestPropertyKey1, kTestPropertyServerKey1,
+      PropertyConverter::CreateAcceptAnyValueCallback());
+  converter->RegisterProperty(
+      kTestPropertyKey2, kTestPropertyServerKey2,
+      PropertyConverter::CreateAcceptAnyValueCallback());
+  converter->RegisterProperty(
+      kTestPropertyKey3, kTestPropertyServerKey3,
+      PropertyConverter::CreateAcceptAnyValueCallback());
 }
 
 // Convert a primitive aura property value to a mus transport value.