Merge bleeding edge into the GC branch up to 7948. The asserts

src/extensions/experimental/language-matcher.h

 // Copyright 2011 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 75 matching lines @@
   // Compares locale_id to the supported list of locales and returns best
   // match.
   // Returns false if it fails to convert locale id from ICU to BCP47 format.
   static bool CompareToSupportedLocaleIDList(v8::Handle<v8::String> locale_id,
                                              LocaleIDMatch* result);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_EXTENSIONS_EXPERIMENTAL_LANGUAGE_MATCHER_H_