Fix a comment: ALLOW_UNUSED_LOCAL() is not needed for replacing ASSERT_UNUSED()

third_party/WebKit/Source/wtf/Assertions.h

 /*
  * Copyright (C) 2003, 2006, 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 161 matching lines @@
 #else
 #define NO_RETURN_DUE_TO_CRASH
 #endif
 
 // ASSERT, ASSERT_NOT_REACHED, ASSERT_UNUSED
 //  These macros are compiled out of release builds.
 //  Expressions inside them are evaluated in debug builds only.
 //  They are deprecated. We should use:
 //    - DCHECK() for ASSERT()
 //    - NOTREACHED() for ASSERT_NOT_REACHED()
-//    - DCHECK() and ALLOW_UNUSED_LOCAL() for ASSERT_UNUSED().
+//    - DCHECK() for ASSERT_UNUSED().
 #if OS(WIN)
 // FIXME: Change to use something other than ASSERT to avoid this conflict with
 // the underlying platform.
 #undef ASSERT
 #endif
 
 #define DCHECK_AT(assertion, file, line) LAZY_STREAM(logging::LogMessage(file, line, #assertion).stream(), DCHECK_IS_ON() ? !(assertion) : false)
 
 #if ENABLE(ASSERT)
 
@@ skipping 109 matching lines @@
 } \
 inline const thisType& to##thisType(const argumentType& argumentName) \
 { \
     ASSERT_WITH_SECURITY_IMPLICATION(referencePredicate); \
     return static_cast<const thisType&>(argumentName); \
 } \
 void to##thisType(const thisType*); \
 void to##thisType(const thisType&)
 
 #endif // WTF_Assertions_h