ES6: Add support for method shorthand in object literals

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 5ecdfcfd2f4aec25c94ab22927b53363715b3b59..54917473925c6942ea464b83fac986d9512067b0 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1231,6 +1231,9 @@ void Factory::InitializeFunction(Handle<JSFunction> function,
   function->set_prototype_or_initial_map(*the_hole_value());
   function->set_literals_or_bindings(*empty_fixed_array());
   function->set_next_function_link(*undefined_value());
+
+  // TODO(arv): This does not look correct. We need to make sure we use
+  // a Map that has no prototype property.
   if (info->is_arrow()) function->RemovePrototype();
 }
 
@@ -1350,8 +1353,8 @@ Handle<JSFunction> Factory::NewFunctionFromSharedFunctionInfo(
     Handle<SharedFunctionInfo> info,
     Handle<Context> context,
     PretenureFlag pretenure) {
-  int map_index = Context::FunctionMapIndex(info->strict_mode(),
-                                            info->is_generator());
+  int map_index = Context::FunctionMapIndex(
+      info->strict_mode(), info->is_generator(), info->is_concise_method());
   Handle<Map> map(Map::cast(context->native_context()->get(map_index)));
   Handle<JSFunction> result = NewFunction(map, info, context, pretenure);
 
@@ -1893,12 +1896,13 @@ Handle<FixedArray> Factory::NewTypeFeedbackVector(int slot_count) {
 
 Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(
     Handle<String> name, int number_of_literals, bool is_generator,
-    bool is_arrow, Handle<Code> code, Handle<ScopeInfo> scope_info,
-    Handle<FixedArray> feedback_vector) {
+    bool is_arrow, bool is_concise_method, Handle<Code> code,
+    Handle<ScopeInfo> scope_info, Handle<FixedArray> feedback_vector) {
   Handle<SharedFunctionInfo> shared = NewSharedFunctionInfo(name, code);
   shared->set_scope_info(*scope_info);
   shared->set_feedback_vector(*feedback_vector);
   shared->set_is_arrow(is_arrow);
+  shared->set_is_concise_method(is_concise_method);
   int literals_array_size = number_of_literals;
   // If the function contains object, regexp or array literals,
   // allocate extra space for a literals array prefix containing the