Revert 259561 "Set the default ASan options for executables buil..."

trunk/src/chrome/app/chrome_exe_main_gtk.cc

Index: trunk/src/chrome/app/chrome_exe_main_gtk.cc
===================================================================
--- trunk/src/chrome/app/chrome_exe_main_gtk.cc	(revision 260036)
+++ trunk/src/chrome/app/chrome_exe_main_gtk.cc	(working copy)
@@ -11,6 +11,31 @@
 // order to make it easy to update the app from GoogleUpdate. We don't need
 // that extra layer with on linux.
 
+#if defined(ADDRESS_SANITIZER) && defined(GOOGLE_CHROME_BUILD)
+// Default AddressSanitizer options for the official build. These do not affect
+// tests or non-official Chromium builds.
+//  - disable the strict memcmp() checking (http://crbug.com/178677 and
+//    http://crbug.com/178404).
+//  - set the malloc_context_size (i.e. the size of stack traces collected by
+//    ASan for each malloc/free) to 5. These stack traces tend to accumulate
+//    very fast in applications using JIT (v8 in Chrome's case), see
+//    https://code.google.com/p/address-sanitizer/issues/detail?id=177
+//  - disable the in-process symbolization, which isn't 100% compatible with
+//    the existing sandboxes and doesn't make much sense for stripped official
+//    binaries.
+const char *kAsanDefaultOptions =
+    "malloc_context_size=5 strict_memcmp=0 symbolize=false";
+
+// Override the default ASan options for the Google Chrome executable.
+// __asan_default_options should not be instrumented, because it is called
+// before ASan is initialized.
+extern "C"
+__attribute__((no_sanitize_address))
+const char *__asan_default_options() {
+  return kAsanDefaultOptions;
+}
+#endif
+
 extern "C" {
 int ChromeMain(int argc, const char** argv);
 }