[runtime] Support Proxy setPrototypeOf trap

src/messages.h

Index: src/messages.h
diff --git a/src/messages.h b/src/messages.h
index e0df3260375212de37511fb16f0824e59454b9bb..78dc6e88eb42a47e9fad4ff4f9548d43cddf53f9 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -156,6 +156,9 @@ class CallSite {
     "Object.prototype.__defineGetter__: Expecting function")                   \
   T(ObjectGetterCallable, "Getter must be a function: %")                      \
   T(ObjectNotExtensible, "Can't add property %, object is not extensible")     \
+  T(ObjectSetPrototypeFailed, "Could not set '%' as Protoype on '%'")          \

[neis, 2015/11/16 19:09:53]

s/Protoype/prototype/
But why do we need both this one and ProtoNotSet below?

+  T(ObjectSetPrototypeNotExtensible,                                           \
+    "Can't set prototype, object is not extensible")                           \
   T(ObjectSetterExpectingFunction,                                             \
     "Object.prototype.__defineSetter__: Expecting function")                   \
   T(ObjectSetterCallable, "Setter must be a function: %")                      \
@@ -177,6 +180,7 @@ class CallSite {
   T(PromiseCyclic, "Chaining cycle detected for promise %")                    \
   T(PropertyDescObject, "Property description must be an object: %")           \
   T(PropertyNotFunction, "Property '%' of object % is not a function")         \
+  T(ProtoNotSet, "Could not set prototype '%' on '%'' ")                       \
   T(ProtoObjectOrNull, "Object prototype may only be an Object or null: %")    \
   T(PrototypeParentNotAnObject,                                                \
     "Class extends value does not have valid prototype property %")            \
@@ -195,6 +199,7 @@ class CallSite {
   T(ProxyTargetNonObject, "Proxy.% called with non-object as target")          \
   T(ProxyTrapFunctionExpected,                                                 \
     "Proxy.createFunction called with non-function for '%' trap")              \
+  T(ProxyTrapReturnedFalse, "Proxy trap '%s' returned false.")                 \
   T(RedefineDisallowed, "Cannot redefine property: %")                         \
   T(RedefineExternalArray,                                                     \
     "Cannot redefine a property of an object with external array elements")    \