Relax the braces style checker to allow either {} or { }.

Tools/Scripts/webkitpy/style/checkers/cpp_unittest.py

 # -*- coding: utf-8; -*-
 #
 # Copyright (C) 2011 Google Inc. All rights reserved.
 # Copyright (C) 2009 Torch Mobile Inc.
 # Copyright (C) 2009 Apple Inc. All rights reserved.
 # Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
@@ skipping 1691 matching lines @@
     def test_spacing_before_braces(self):
         self.assert_lint('if (foo){', 'Missing space before {'
                          '  [whitespace/braces] [5]')
         self.assert_lint('for{', 'Missing space before {'
                          '  [whitespace/braces] [5]')
         self.assert_lint('for {', '')
         self.assert_lint('EXPECT_DEBUG_DEATH({', '')
 
     def test_spacing_between_braces(self):
         self.assert_lint('    { }', '')
-        self.assert_lint('    {}', 'Missing space inside { }.  [whitespace/braces] [5]')
+        self.assert_lint('    {}', '')
         self.assert_lint('    {   }', 'Too many spaces inside { }.  [whitespace/braces] [5]')
 
     def test_spacing_around_else(self):
         self.assert_lint('}else {', 'Missing space before else'
                          '  [whitespace/braces] [5]')
         self.assert_lint('} else{', 'Missing space before {'
                          '  [whitespace/braces] [5]')
         self.assert_lint('} else {', '')
         self.assert_lint('} else if', '')
 
@@ skipping 3496 matching lines @@
     def test_ne(self):
         """Test __ne__ inequality function."""
         checker1 = self._checker()
         checker2 = self._checker()
 
         # != calls __ne__.
         # By default, __ne__ always returns true on different objects.
         # Thus, just check the distinguishing case to verify that the
         # code defines __ne__.
         self.assertFalse(checker1 != checker2)