ES6: Add support for method shorthand in object literals

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index c1d051b3d74e94f94deaf218c2831c20823896a0..68e6baf0c3b80b238d11302a0285275b0f24c3d8 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -591,12 +591,12 @@ class NumberToStringStub V8_FINAL : public HydrogenCodeStub {
 
 class FastNewClosureStub : public HydrogenCodeStub {
  public:
-  FastNewClosureStub(Isolate* isolate,
-                     StrictMode strict_mode,
-                     bool is_generator)
+  FastNewClosureStub(Isolate* isolate, StrictMode strict_mode,
+                     bool is_generator, bool is_concise_method)
       : HydrogenCodeStub(isolate),
         strict_mode_(strict_mode),
-        is_generator_(is_generator) { }
+        is_generator_(is_generator),
+        is_concise_method_(is_concise_method) {}
 
   virtual Handle<Code> GenerateCode() V8_OVERRIDE;
 
@@ -607,19 +607,23 @@ class FastNewClosureStub : public HydrogenCodeStub {
 
   StrictMode strict_mode() const { return strict_mode_; }
   bool is_generator() const { return is_generator_; }
+  bool is_concise_method() const { return is_concise_method_; }
 
  private:
-  class StrictModeBits: public BitField<bool, 0, 1> {};
-  class IsGeneratorBits: public BitField<bool, 1, 1> {};
+  class StrictModeBits : public BitField<bool, 0, 1> {};
+  class IsGeneratorBits : public BitField<bool, 1, 1> {};
+  class IsMethodBits : public BitField<bool, 2, 1> {};
 
   Major MajorKey() const { return FastNewClosure; }
   int NotMissMinorKey() const {
     return StrictModeBits::encode(strict_mode_ == STRICT) |
-      IsGeneratorBits::encode(is_generator_);
+           IsGeneratorBits::encode(is_generator_) |
+           IsMethodBits::encode(is_concise_method_);
   }
 
   StrictMode strict_mode_;
   bool is_generator_;
+  bool is_concise_method_;
 };