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 4d021c2dc7dbe19c901d15753d288c1e8ad506ee..4aca6c7110c76e3e416b90924e2f41dde4fca633 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -592,12 +592,12 @@ 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,
+                     FunctionKind kind)
       : HydrogenCodeStub(isolate),
         strict_mode_(strict_mode),
-        is_generator_(is_generator) { }
+        is_generator_(kind == FunctionKind::kGeneratorFunction),
+        is_concise_method_(kind == FunctionKind::kConciseMethod) {}
 
   virtual Handle<Code> GenerateCode() V8_OVERRIDE;
 
@@ -608,19 +608,31 @@ 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_; }
+  FunctionKind kind() const {
+    // TODO(arv): Update to handle concise generator methods.
+    // if (is_arrow()) return FunctionKind::kArrowFunction;
+    if (is_generator()) return FunctionKind::kGeneratorFunction;
+    if (is_concise_method()) return FunctionKind::kConciseMethod;
+    return FunctionKind::kNormalFunction;
+  }
 
  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_;
+  // TODO(arv): Maybe store these as bits?
   bool is_generator_;
+  bool is_concise_method_;
 };