Relax expectation of month format for en-US locale.

Source/platform/text/LocaleWinTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. 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
@@ skipping 195 matching lines @@
 TEST_F(LocaleWinTest, dateFormat)
 {
     EXPECT_STREQ("y-M-d", LocaleWin::dateFormat("y-M-d").utf8().data());
     EXPECT_STREQ("''yy'-'''MM'''-'dd", LocaleWin::dateFormat("''yy-''MM''-dd").utf8().data());
     EXPECT_STREQ("yyyy'-''''-'MMM'''''-'dd", LocaleWin::dateFormat("yyyy-''''-MMM''''-dd").utf8().data());
     EXPECT_STREQ("yyyy'-'''''MMMM-dd", LocaleWin::dateFormat("yyyy-''''MMMM-dd").utf8().data());
 }
 
 TEST_F(LocaleWinTest, monthFormat)
 {
-    EXPECT_STREQ("MMMM, yyyy", monthFormat(EnglishUS).utf8().data());
+    // Month format for EnglishUS:
+    //  "MMMM, yyyy" on Windows 7 or older.
+    //  "MMMM yyyy" on Window 8 or later.
+    EXPECT_STREQ("MMMM yyyy", monthFormat(EnglishUS).replaceWithLiteral(',', "").utf8().data());
     EXPECT_STREQ("MMMM yyyy", monthFormat(FrenchFR).utf8().data());
     EXPECT_STREQ("yyyy\xE5\xB9\xB4M\xE6\x9C\x88", monthFormat(JapaneseJP).utf8().data());
 }
 
 TEST_F(LocaleWinTest, timeFormat)
 {
     EXPECT_STREQ("h:mm:ss a", timeFormat(EnglishUS).utf8().data());
     EXPECT_STREQ("HH:mm:ss", timeFormat(FrenchFR).utf8().data());
     EXPECT_STREQ("H:mm:ss", timeFormat(JapaneseJP).utf8().data());
 }
@@ skipping 70 matching lines @@
     testNumbers(Spanish);
     testNumbers(Persian);
     testNumbers(JapaneseJP);
     testNumbers(KoreanKR);
     testNumbers(ChineseCN);
     testNumbers(ChineseHK);
     testNumbers(ChineseTW);
 }
 
 } // namespace blink