Implement ES6 rest parameters

src/compiler.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_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 406 matching lines @@
   int osr_expr_stack_height() { return osr_expr_stack_height_; }
   void set_osr_expr_stack_height(int height) {
     DCHECK(height >= 0);
     osr_expr_stack_height_ = height;
   }
 
 #if DEBUG
   void PrintAstForTesting();
 #endif
 
+  bool is_simple_parameter_list();
+
  protected:
   CompilationInfo(Handle<SharedFunctionInfo> shared_info,
                   Zone* zone);
   CompilationInfo(HydrogenCodeStub* stub,
                   Isolate* isolate,
                   Zone* zone);
   CompilationInfo(ScriptCompiler::ExternalSourceStream* source_stream,
                   ScriptCompiler::StreamedSource::Encoding encoding,
                   Isolate* isolate, Zone* zone);
 
@@ skipping 340 matching lines @@
   Zone zone_;
   unsigned info_zone_start_allocation_size_;
   base::ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_