Implement ES6 rest parameters

src/full-codegen.h

 // 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.
 
 #ifndef V8_FULL_CODEGEN_H_
 #define V8_FULL_CODEGEN_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 666 matching lines @@
   MacroAssembler* masm() { return masm_; }
 
   class ExpressionContext;
   const ExpressionContext* context() { return context_; }
   void set_new_context(const ExpressionContext* context) { context_ = context; }
 
   Handle<Script> script() { return info_->script(); }
   bool is_eval() { return info_->is_eval(); }
   bool is_native() { return info_->is_native(); }
   LanguageMode language_mode() { return function()->language_mode(); }
+  bool is_simple_parameter_list() { return info_->is_simple_parameter_list(); }
   FunctionLiteral* function() { return info_->function(); }
   Scope* scope() { return scope_; }
 
   static Register result_register();
   static Register context_register();
 
   // Set fields in the stack frame. Offsets are the frame pointer relative
   // offsets defined in, e.g., StandardFrameConstants.
   void StoreToFrameField(int frame_offset, Register value);
 
@@ skipping 350 matching lines @@
 
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_