NOSUBMIT: Reduce ASAN memory consumption on 32-bit Intel Chrome OS

build/sanitizers/sanitizer_options.cc

Index: build/sanitizers/sanitizer_options.cc
diff --git a/build/sanitizers/sanitizer_options.cc b/build/sanitizers/sanitizer_options.cc
index 39fa1403c975f379160571fd86c0ef339d111202..97b4f88c631af432885a4efd3ea21509e4452c1c 100644
--- a/build/sanitizers/sanitizer_options.cc
+++ b/build/sanitizers/sanitizer_options.cc
@@ -58,7 +58,17 @@ void _sanitizer_options_link_helper() { }
 //     so the slow unwinder may not work properly.
 //   detect_stack_use_after_return=1 - use fake stack to delay the reuse of
 //     stack allocations and detect stack-use-after-return errors.
-#if defined(OS_LINUX)
+//   quarantine_size_mb=16 - reduce size of quarantine used to detect use-after-
+//     free errors. Increases risk of false negatives but uses less RAM.
+#if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86)
+// On 32-bit Intel Chrome OS try to reduce ASAN memory consumption with
+// quarantine_size_mb.
+const char kAsanDefaultOptions[] =
+    "symbolize=1 check_printf=1 use_sigaltstack=1 "
+    "detect_leaks=0 strip_path_prefix=/../../ fast_unwind_on_fatal=1 "
+    "detect_stack_use_after_return=0 "
+    "quarantine_size_mb=16 ";
+#elif defined(OS_LINUX)
 #if defined(GOOGLE_CHROME_BUILD)
 // Default AddressSanitizer options for the official build. These do not affect
 // tests on buildbots (which don't set GOOGLE_CHROME_BUILD) or non-official