Introduce extended mode.

src/bootstrapper.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 465 matching lines @@
     global_context()->set_initial_object_prototype(*prototype);
     SetPrototype(object_fun, prototype);
     object_function_map->
       set_instance_descriptors(heap->empty_descriptor_array());
   }
 
   // Allocate the empty function as the prototype for function ECMAScript
   // 262 15.3.4.
   Handle<String> symbol = factory->LookupAsciiSymbol("Empty");
   Handle<JSFunction> empty_function =
-      factory->NewFunctionWithoutPrototype(symbol, kNonStrictMode);
+      factory->NewFunctionWithoutPrototype(symbol, CLASSIC_MODE);
 
   // --- E m p t y ---
   Handle<Code> code =
       Handle<Code>(isolate->builtins()->builtin(
           Builtins::kEmptyFunction));
   empty_function->set_code(*code);
   empty_function->shared()->set_code(*code);
   Handle<String> source = factory->NewStringFromAscii(CStrVector("() {}"));
   Handle<Script> script = factory->NewScript(source);
   script->set_type(Smi::FromInt(Script::TYPE_NATIVE));
@@ skipping 68 matching lines @@
   descriptors->Sort(witness);
   return descriptors;
 }
 
 
 // ECMAScript 5th Edition, 13.2.3
 Handle<JSFunction> Genesis::GetThrowTypeErrorFunction() {
   if (throw_type_error_function.is_null()) {
     Handle<String> name = factory()->LookupAsciiSymbol("ThrowTypeError");
     throw_type_error_function =
-      factory()->NewFunctionWithoutPrototype(name, kNonStrictMode);
+      factory()->NewFunctionWithoutPrototype(name, CLASSIC_MODE);
     Handle<Code> code(isolate()->builtins()->builtin(
         Builtins::kStrictModePoisonPill));
     throw_type_error_function->set_map(
         global_context()->function_map());
     throw_type_error_function->set_code(*code);
     throw_type_error_function->shared()->set_code(*code);
     throw_type_error_function->shared()->DontAdaptArguments();
 
     PreventExtensions(throw_type_error_function);
   }
@@ skipping 1720 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   ASSERT(!IsActive());
 }
 
 } }  // namespace v8::internal