Add use_allocator instead of linux_use_tcmalloc to switch the allocator.

base/security_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ skipping 24 matching lines @@
 template <typename Type>
 Type HideValueFromCompiler(volatile Type value) {
 #if defined(__GNUC__)
   // In a GCC compatible compiler (GCC or Clang), make this compiler barrier
   // more robust than merely using "volatile".
   __asm__ volatile ("" : "+r" (value));
 #endif  // __GNUC__
   return value;
 }
 
-// - NO_TCMALLOC (should be defined if we compile with linux_use_tcmalloc=0)
+// - NO_TCMALLOC (should be defined if compiled with use_allocator!="tcmalloc")
 // - ADDRESS_SANITIZER because it has its own memory allocator
 // - IOS does not use tcmalloc
 // - OS_MACOSX does not use tcmalloc
 #if !defined(NO_TCMALLOC) && !defined(ADDRESS_SANITIZER) && \
     !defined(OS_IOS) && !defined(OS_MACOSX)
   #define TCMALLOC_TEST(function) function
 #else
   #define TCMALLOC_TEST(function) DISABLED_##function
 #endif
 
@@ skipping 226 matching lines @@
   // kRandomMask, so we use it as an additional detection mechanism.
   const uintptr_t kRandomMask = 0x3fffffffffffULL;
   bool impossible_random_address =
       reinterpret_cast<uintptr_t>(ptr.get()) & ~kRandomMask;
   EXPECT_FALSE(impossible_random_address);
 }
 
 #endif  // (defined(OS_LINUX) || defined(OS_CHROMEOS)) && defined(__x86_64__)
 
 }  // namespace