Port cpplint's C++11 raw string support to blink's cpp style checker.

third_party/WebKit/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 1074 matching lines @@
                          cpp_style.cleanse_comments('int /* foo */ o = 0;'))
         self.assertEqual('foo(int a, int b);',
                          cpp_style.cleanse_comments('foo(int a /* abc */, int b);'))
         self.assertEqual('f(a, b);',
                          cpp_style.cleanse_comments('f(a, /* name */ b);'))
         self.assertEqual('f(a, b);',
                          cpp_style.cleanse_comments('f(a /* name */, b);'))
         self.assertEqual('f(a, b);',
                          cpp_style.cleanse_comments('f(a, /* name */b);'))
 
+    def test_raw_strings(self):
+        self.assert_multi_line_lint(
+            '''
+            void Func() {
+                static const char kString[] = R"(
+                  #endif  <- invalid preprocessor should be ignored
+                  */      <- invalid comment should be ignored too
+                )";
+            }''',
+            '')
+        self.assert_multi_line_lint(
+            '''
+            void Func() {
+                const char s[] = R"TrueDelimiter(
+                    )"
+                    )FalseDelimiter"
+                    )TrueDelimiter";
+            }''',
+            '')
+        self.assert_multi_line_lint(
+            '''
+            void Func() {
+                char char kString[] = R"(  ";" )";
+            }''',
+            '')
+        self.assert_multi_line_lint(
+            '''
+            static const char kRawString[] = R"(
+                \tstatic const int kLineWithTab = 1;
+                static const int kLineWithTrailingWhiteSpace = 1;\x20
+
+                 void WeirdNumberOfSpacesAtLineStart() {
+                    string x;
+                    x += StrCat("Use StrAppend instead");
+                }
+
+                void BlankLineAtEndOfBlock() {
+                    // TODO incorrectly formatted
+                    //Badly formatted comment
+
+                }
+
+            )";''',
+            '')
+
     def test_multi_line_comments(self):
         # missing explicit is bad
         self.assert_multi_line_lint(
             r'''int a = 0;
                 /* multi-liner
                 class Foo {
                 Foo(int f);  // should cause a lint warning in code
                 }
             */ ''',
             '')
@@ skipping 2864 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)