Move final parts of class literal setup into a single runtime call

src/full-codegen/ia32/full-codegen-ia32.cc

Index: src/full-codegen/ia32/full-codegen-ia32.cc
diff --git a/src/full-codegen/ia32/full-codegen-ia32.cc b/src/full-codegen/ia32/full-codegen-ia32.cc
index 6652c92e9fd2f0a9dbdf1d48bab44a3ae11031bb..015ab2f7847a8748597a7fcd3c8d1520fe49c420 100644
--- a/src/full-codegen/ia32/full-codegen-ia32.cc
+++ b/src/full-codegen/ia32/full-codegen-ia32.cc
@@ -2483,24 +2483,12 @@ void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit,
     }
   }
 
-  // prototype
-  __ CallRuntime(Runtime::kToFastProperties, 1);
-
-  // constructor
-  __ CallRuntime(Runtime::kToFastProperties, 1);
-
-  if (is_strong(language_mode())) {
-    __ mov(scratch,
-           FieldOperand(eax, JSFunction::kPrototypeOrInitialMapOffset));
-    __ push(eax);
-    __ Push(scratch);
-    // TODO(conradw): It would be more efficient to define the properties with
-    // the right attributes the first time round.
-    // Freeze the prototype.
-    __ CallRuntime(Runtime::kObjectFreeze, 1);
-    // Freeze the constructor.
-    __ CallRuntime(Runtime::kObjectFreeze, 1);
-  }
+  // Set both the prototype and constructor to have fast properties, and also
+  // freeze them in strong mode.
+  __ CallRuntime(is_strong(language_mode())
+                     ? Runtime::kFinalizeClassDefinitionStrong
+                     : Runtime::kFinalizeClassDefinition,
+                 2);
 }