[runtime] [proxy] Adding [[SetPrototypeOf]] trap.

src/messages.h

Index: src/messages.h
diff --git a/src/messages.h b/src/messages.h
index 501c7166f0349ac6137fe12c103133470fa793c6..907947af3bbac12f3e424b9022a632e957abb128 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -189,10 +189,14 @@ class CallSite {
   T(ProxyHandlerReturned, "Proxy handler % returned % from '%' trap")          \
   T(ProxyHandlerTrapMissing, "Proxy handler % has no '%' trap")                \
   T(ProxyHandlerTrapMustBeCallable,                                            \
-    "Proxy handler %0 has non-callable '%' trap")                              \
+    "Proxy handler % has non-callable '%' trap")                               \
   T(ProxyIsExtensibleViolatesInvariant,                                        \
     "Result of trap 'isExtensible' is inconsistent with proxy's target")       \
   T(ProxyNonObjectPropNames, "Trap '%' returned non-object %")                 \
+  T(ProxySetPrototypeFailed,                                                   \
+    "Proxy handler returned false when setting protoype '%'")                  \

[Jakob Kummerow, 2015/11/30 16:29:18]

nit: s/protoype/prototype/

+  T(ProxySetPrototypeVioloatesInvariant,                                       \

[Jakob Kummerow, 2015/11/30 16:29:18]

nit: s/Violoates/Violates/

+    "Trap 'setPrototypeOf' did not set prototype '%' on target '%'")           \
   T(ProxyPreventExtensionsViolatesInvariant,                                   \
     "Trap 'preventExtensions' returned true but the proxy's target is "        \
     "extensible")                                                              \