Updated style checker for wtf/file.h includes.

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

 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2009, 2010, 2012 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 2839 matching lines @@
 
     include = matched.group(2)
     is_system = (matched.group(1) == '<')
 
     # Look for any of the stream classes that are part of standard C++.
     if match(r'(f|ind|io|i|o|parse|pf|stdio|str|)?stream$', include):
         error(line_number, 'readability/streams', 3,
               'Streams are highly discouraged.')
 
     # Look for specific includes to fix.
-    if include.startswith('wtf/') and not is_system:
+    if include.startswith('wtf/') and is_system:
         error(line_number, 'build/include', 4,
-              'wtf includes should be <wtf/file.h> instead of "wtf/file.h".')
+              'wtf includes should be "wtf/file.h" instead of <wtf/file.h>.')
 
     if filename.find('/chromium/') != -1 and include.startswith('cc/CC'):
         error(line_number, 'build/include', 4,
               'cc includes should be "CCFoo.h" instead of "cc/CCFoo.h".')
 
     duplicate_header = include in include_state
     if duplicate_header:
         error(line_number, 'build/include', 4,
               '"%s" already included at %s:%s' %
               (include, filename, include_state[include]))
@@ skipping 903 matching lines @@
                        self.handle_style_error, self.min_confidence)
 
 
 # FIXME: Remove this function (requires refactoring unit tests).
 def process_file_data(filename, file_extension, lines, error, min_confidence, unit_test_config):
     global _unit_test_config
     _unit_test_config = unit_test_config
     checker = CppChecker(filename, file_extension, error, min_confidence)
     checker.check(lines)
     _unit_test_config = {}