Refactor class declaration logic to the parser and runtime

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index d84b57e9d6d8b566537d342700fd0b517cbd5303..6146439eaf23e2f3844f0b1d4c0e0fed22af0469 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -79,7 +79,7 @@ namespace internal {
   F(ThrowStaticPrototypeError, 0, 1)        \
   F(ThrowIfStaticPrototype, 1, 1)           \
   F(HomeObjectSymbol, 0, 1)                 \
-  F(DefineClass, 4, 1)                      \
+  F(DefineClass, 7, 1)                      \
   F(LoadFromSuper, 3, 1)                    \
   F(LoadKeyedFromSuper, 3, 1)               \
   F(StoreToSuper_Strict, 4, 1)              \
@@ -1137,6 +1137,12 @@ class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
+// These flags are used for passing information about ES6 class methods from the
+// parser to the runtime.
+const uint32_t kIsStaticMask = 0x01;
+const uint32_t kIsAccessorMask = 0x02;
+const uint32_t kIsSetterMask = 0x04;
+
 }  // namespace internal
 }  // namespace v8