Revert "Fix inconsistencies wrt whitespaces."

test/cctest/test-regexp.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 427 matching lines @@
   return ('0' <= c && c <= '9');
 }
 
 
 static bool NotDigit(uc16 c) {
   return !IsDigit(c);
 }
 
 
 static bool IsWhiteSpace(uc16 c) {
-  return v8::internal::WhiteSpace::Is(c);
+  switch (c) {
+    case 0x09:
+    case 0x0A:
+    case 0x0B:
+    case 0x0C:
+    case 0x0d:
+    case 0x20:
+    case 0xA0:
+    case 0x2028:
+    case 0x2029:
+    case 0xFEFF:
+      return true;
+    default:
+      return unibrow::Space::Is(c);
+  }
 }
 
 
 static bool NotWhiteSpace(uc16 c) {
   return !IsWhiteSpace(c);
 }
 
 
 static bool NotWord(uc16 c) {
   return !IsRegExpWord(c);
@@ skipping 1335 matching lines @@
   ZoneList<CharacterRange> first_only(4, &zone);
   ZoneList<CharacterRange> second_only(4, &zone);
   ZoneList<CharacterRange> both(4, &zone);
 }
 
 
 TEST(Graph) {
   V8::Initialize(NULL);
   Execute("\\b\\w+\\b", false, true, true);
 }