Fix memory error during selector matching due to getMatchedCSSRules.

Source/core/core.gypi

 {
     'variables': {
         'core_idl_files': [
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
             'css/CSSFontFaceRule.idl',
             'css/CSSHostRule.idl',
             'css/CSSImportRule.idl',
             'css/CSSKeyframeRule.idl',
@@ skipping 810 matching lines @@
             'css/resolver/ScopedStyleResolver.cpp',
             'css/resolver/ScopedStyleResolver.h',
             'css/resolver/SharedStyleFinder.cpp',
             'css/resolver/SharedStyleFinder.h',
             'css/resolver/StyleAdjuster.cpp',
             'css/resolver/StyleAdjuster.h',
             'css/resolver/StyleBuilderCustom.cpp',
             'css/resolver/StyleBuilderCustom.h',
             'css/resolver/StyleResolver.cpp',
             'css/resolver/StyleResolver.h',
+            'css/resolver/StyleResolverIncludes.h',
             'css/resolver/StyleResolverState.cpp',
             'css/resolver/StyleResolverState.h',
             'css/resolver/StyleResourceLoader.cpp',
             'css/resolver/StyleResourceLoader.h',
             'css/resolver/TransformBuilder.cpp',
             'css/resolver/TransformBuilder.h',
             'css/resolver/ViewportStyleResolver.cpp',
             'css/resolver/ViewportStyleResolver.h',
             'editing/AppendNodeCommand.cpp',
             'editing/AppendNodeCommand.h',
@@ skipping 2764 matching lines @@
                 'bison_exe': 'bison',
                 # We specify a preprocess so it happens locally and won't get
                 # distributed to goma.
                 # FIXME: /usr/bin/gcc won't exist on OSX forever. We want to
                 # use /usr/bin/clang once we require Xcode 4.x.
                 'preprocessor': '--preprocessor "/usr/bin/gcc -E -P -x c++"'
               }],
          ],
     }
 }