Migrate to OS_MAC and OS_APPLE in build

Bug: 1105907
Change-Id: I509290b67e64369e63a076097a8095347d38a957
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2324175
Commit-Queue: Avi Drissman <avi@chromium.org>
Auto-Submit: Avi Drissman <avi@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#792756}

build/sanitizers/sanitizer_options.cc

@@ -48,7 +48,7 @@ const char kAsanDefaultOptions[] =
     "fast_unwind_on_fatal=1 detect_stack_use_after_return=1 "
     "symbolize=1 detect_leaks=0 allow_user_segv_handler=1 ";
 
-#elif defined(OS_MACOSX)
+#elif defined(OS_APPLE)
 const char* kAsanDefaultOptions =
     "check_printf=1 use_sigaltstack=1 strip_path_prefix=/../../ "
     "fast_unwind_on_fatal=1 detect_stack_use_after_return=1 ";
@@ -59,7 +59,7 @@ const char* kAsanDefaultOptions =
     "fast_unwind_on_fatal=1 detect_stack_use_after_return=1 ";
 #endif  // OS_LINUX
 
-#if defined(OS_LINUX) || defined(OS_MACOSX) || defined(OS_WIN)
+#if defined(OS_LINUX) || defined(OS_APPLE) || defined(OS_WIN)
 // Allow NaCl to override the default asan options.
 extern const char* kAsanDefaultOptionsNaCl;
 __attribute__((weak)) const char* kAsanDefaultOptionsNaCl = nullptr;
@@ -75,7 +75,7 @@ extern char kASanDefaultSuppressions[];
 SANITIZER_HOOK_ATTRIBUTE const char *__asan_default_suppressions() {
   return kASanDefaultSuppressions;
 }
-#endif  // OS_LINUX || OS_MACOSX || OS_WIN
+#endif  // OS_LINUX || OS_APPLE || OS_WIN
 #endif  // ADDRESS_SANITIZER
 
 #if defined(THREAD_SANITIZER) && defined(OS_LINUX)