Revert 41938 - Merged third_party/tcmalloc/vendor/src(googleperftools r87) in...

third_party/tcmalloc/chromium/src/google/malloc_hook.h

Index: third_party/tcmalloc/chromium/src/google/malloc_hook.h
===================================================================
--- third_party/tcmalloc/chromium/src/google/malloc_hook.h	(revision 41940)
+++ third_party/tcmalloc/chromium/src/google/malloc_hook.h	(working copy)
@@ -191,12 +191,6 @@
                                         int skip_count) {
     return MallocHook_GetCallerStackTrace(result, max_depth, skip_count);
   }
-
-  // Unhooked versions of mmap() and munmap().   These should be used
-  // only by experts, since they bypass heapchecking, etc.
-  static void* UnhookedMMap(void *start, size_t length, int prot, int flags,
-                            int fd, off_t offset);
-  static int UnhookedMUnmap(void *start, size_t length);
 };
 
 #endif /* _MALLOC_HOOK_H_ */