Re-enable SecurityTest.NewOverflow on Mac.

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 <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
@@ skipping 69 matching lines @@
     printf("Platform has overflow: %s\n",
            !overflow_detected ? "yes." : "no.");
 #else
     // Otherwise, fail the test. (Note: EXPECT are ok in subfunctions, ASSERT
     // aren't).
     EXPECT_TRUE(overflow_detected);
 #endif
   }
 }
 
-#if defined(OS_IOS) || defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)
+#if defined(OS_IOS) || defined(OS_WIN) || defined(OS_LINUX)
 #define MAYBE_NewOverflow DISABLED_NewOverflow
 #else
 #define MAYBE_NewOverflow NewOverflow
 #endif
 // Test array[TooBig][X] and array[X][TooBig] allocations for int overflows.
 // IOS doesn't honor nothrow, so disable the test there.
 // Crashes on Windows Dbg builds, disable there as well.
-// Fails on Mac 10.8 http://crbug.com/227092
 // Disabled on Linux because failing Linux Valgrind bot, and Valgrind exclusions
 // are not currently read. See http://crbug.com/582398
 TEST(SecurityTest, MAYBE_NewOverflow) {
   const size_t kArraySize = 4096;
   // We want something "dynamic" here, so that the compiler doesn't
   // immediately reject crazy arrays.
   const size_t kDynamicArraySize = HideValueFromCompiler(kArraySize);
   // numeric_limits are still not constexpr until we switch to C++11, so we
   // use an ugly cast.
   const size_t kMaxSizeT = ~static_cast<size_t>(0);
@@ skipping 70 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(__x86_64__)
 
 }  // namespace