Implement flag and source getters on RegExp.prototype.

src/js/harmony-regexp.js

Index: src/js/harmony-regexp.js
diff --git a/src/js/harmony-regexp.js b/src/js/harmony-regexp.js
index 033ee2c9a513abecf05a9dbc4b67571fb3a3d516..0aed90c9f4e9a630199ae0b39443e8d943dc9642 100644
--- a/src/js/harmony-regexp.js
+++ b/src/js/harmony-regexp.js
@@ -11,6 +11,7 @@
 // -------------------------------------------------------------------
 // Imports
 
+var GetRegExpFlagGetter = utils.ImportNow("GetRegExpFlagGetter");
 var GlobalRegExp = global.RegExp;
 var MakeTypeError;
 
@@ -24,7 +25,8 @@ utils.Import(function(from) {
 // + https://bugs.ecmascript.org/show_bug.cgi?id=3423
 function RegExpGetFlags() {
   if (!IS_SPEC_OBJECT(this)) {
-    throw MakeTypeError(kFlagsGetterNonObject, TO_STRING(this));
+    throw MakeTypeError(
+        kRegExpNonObject, "RegExp.prototype.flags", TO_STRING(this));
   }
   var result = '';
   if (this.global) result += 'g';
@@ -39,4 +41,9 @@ function RegExpGetFlags() {
                                  RegExpGetFlags, null, DONT_ENUM);
 %SetNativeFlag(RegExpGetFlags);
 
+%DefineGetterPropertyUnchecked(GlobalRegExp.prototype, "sticky",
+    GetRegExpFlagGetter("RegExp.prototype.sticky", 8),  DONT_ENUM);
+
+%DefineGetterPropertyUnchecked(GlobalRegExp.prototype, "unicode",
+    GetRegExpFlagGetter("RegExp.prototype.unicode", 16),  DONT_ENUM);
 })