Remove WTFReportAssertionFailure and WTFReportBacktrace.

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 32 matching lines @@
 #include <stdarg.h>
 
 #if OS(WIN)
 #include <windows.h>
 #endif
 
 #ifndef LOG_DISABLED
 #define LOG_DISABLED !DCHECK_IS_ON()
 #endif
 
-// These helper functions are always declared, but not necessarily always
-// defined if the corresponding function is disabled.
-
-WTF_EXPORT void WTFReportAssertionFailure(const char* file,
-                                          int line,
-                                          const char* function,
-                                          const char* assertion);
 // WTFLogAlways() is deprecated. crbug.com/638849
 WTF_EXPORT PRINTF_FORMAT(1, 2) void WTFLogAlways(const char* format, ...);
-WTF_EXPORT void WTFReportBacktrace(int framesToShow = 31);
 
 namespace WTF {
 
 #if LOG_DISABLED
 
 #define WTF_CREATE_SCOPED_LOGGER(...) ((void)0)
 #define WTF_CREATE_SCOPED_LOGGER_IF(...) ((void)0)
 #define WTF_APPEND_SCOPED_LOGGER(...) ((void)0)
 
 #else
@@ skipping 184 matching lines @@
     return static_cast<thisType&>(argument);                                  \
   }                                                                           \
   inline const thisType& to##thisType##OrDie(const argumentType& argument) {  \
     CHECK(referencePredicate);                                                \
     return static_cast<const thisType&>(argument);                            \
   }                                                                           \
   void to##thisType##OrDie(const thisType*);                                  \
   void to##thisType##OrDie(const thisType&)
 
 #endif  // WTF_Assertions_h