[runtime] support new Proxy() instead of Proxy.create and install getPrototypeOf trap

src/messages.h

Index: src/messages.h
diff --git a/src/messages.h b/src/messages.h
index 6d3f797822d4967cb033818d281b5c8aeee54df4..79220894fba55251b76661001813750963395555 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -182,17 +182,17 @@ class CallSite {
     "Class extends value does not have valid prototype property %")            \
   T(ProxyHandlerDeleteFailed,                                                  \
     "Proxy handler % did not return a boolean value from 'delete' trap")       \
-  T(ProxyHandlerNonObject, "Proxy.% called with non-object as handler")        \
+  T(ProxyHandlerNonObject, "Proxy.create called with no-object as handler")    \

[Jakob Kummerow, 2015/11/13 10:47:51]

nit: s/Proxy.create/new Proxy/, s/no-/non-/

   T(ProxyHandlerReturned, "Proxy handler % returned % from '%' trap")          \
   T(ProxyHandlerTrapMissing, "Proxy handler % has no '%' trap")                \
   T(ProxyHandlerTrapMustBeCallable,                                            \
     "Proxy handler %0 has non-callable '%' trap")                              \
   T(ProxyNonObjectPropNames, "Trap '%' returned non-object %")                 \
-  T(ProxyProtoNonObject, "Proxy.create called with no-object as prototype")    \
   T(ProxyPropNotConfigurable,                                                  \
     "Proxy handler % returned non-configurable descriptor for property '%' "   \
     "from '%' trap")                                                           \
   T(ProxyRepeatedPropName, "Trap '%' returned repeated property name '%'")     \
+  T(ProxyTargetNonObject, "Proxy.% called with non-object as target")          \
   T(ProxyTrapFunctionExpected,                                                 \
     "Proxy.createFunction called with non-function for '%' trap")              \
   T(RedefineDisallowed, "Cannot redefine property: %")                         \