Reland "Avoid some unnecessary fast-properties map creations."

src/messages.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // -------------------------------------------------------------------
 
 var kMessages = {
   // Error
   cyclic_proto:                  ["Cyclic __proto__ value"],
   code_gen_from_strings:         ["%0"],
@@ skipping 1206 matching lines @@
       %FunctionSetPrototype(f, new $Error());
     }
     %FunctionSetInstanceClassName(f, 'Error');
     %AddNamedProperty(f.prototype, 'constructor', f, DONT_ENUM);
     %AddNamedProperty(f.prototype, "name", name, DONT_ENUM);
     %SetCode(f, function(m) {
       if (%_IsConstructCall()) {
         // Define all the expected properties directly on the error
         // object. This avoids going through getters and setters defined
         // on prototype objects.
-        %AddNamedProperty(this, 'stack', UNDEFINED, DONT_ENUM);
         if (!IS_UNDEFINED(m)) {
           %AddNamedProperty(this, 'message', ToString(m), DONT_ENUM);
         }
         try { captureStackTrace(this, f); } catch (e) { }
       } else {
         return new f(m);
       }
     });
     %SetNativeFlag(f);
   };
@@ skipping 83 matching lines @@
 function SetUpStackOverflowBoilerplate() {
   var boilerplate = MakeRangeError('stack_overflow', []);
 
   %DefineAccessorPropertyUnchecked(
       boilerplate, 'stack', StackTraceGetter, StackTraceSetter, DONT_ENUM);
 
   return boilerplate;
 }
 
 var kStackOverflowBoilerplate = SetUpStackOverflowBoilerplate();