[Interpreter] Add ForInPrepare runtime function which returns a ObjectTriple.

src/runtime/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime.h"
 
 #include "src/assembler.h"
 #include "src/contexts.h"
 #include "src/handles-inl.h"
 #include "src/heap/heap.h"
 #include "src/isolate.h"
 #include "src/runtime/runtime-utils.h"
 
 namespace v8 {
 namespace internal {
 
 // Header of runtime functions.
 #define F(name, number_of_args, result_size)                    \
   Object* Runtime_##name(int args_length, Object** args_object, \
                          Isolate* isolate);
 FOR_EACH_INTRINSIC_RETURN_OBJECT(F)
 #undef F
 
 #define P(name, number_of_args, result_size)                       \
   ObjectPair Runtime_##name(int args_length, Object** args_object, \
                             Isolate* isolate);
 FOR_EACH_INTRINSIC_RETURN_PAIR(P)
 #undef P
 
+#define T(name, number_of_args, result_size)                         \
+  ObjectTriple Runtime_##name(int args_length, Object** args_object, \
+                              Isolate* isolate);
+FOR_EACH_INTRINSIC_RETURN_TRIPLE(T)
+#undef T
+
 
 #define F(name, number_of_args, result_size)                                  \
   {                                                                           \
     Runtime::k##name, Runtime::RUNTIME, #name, FUNCTION_ADDR(Runtime_##name), \
         number_of_args, result_size                                           \
   }                                                                           \
   ,
 
 
 #define I(name, number_of_args, result_size)                       \
@@ skipping 79 matching lines @@
   }
 }
 
 
 std::ostream& operator<<(std::ostream& os, Runtime::FunctionId id) {
   return os << Runtime::FunctionForId(id)->name;
 }
 
 }  // namespace internal
 }  // namespace v8