GWP-ASan: Disable crash reporter on for unit tests

On macOS, the system crash reporter can take a long time to symbolize
stack traces and cause test time outs. Disable the system crash reporter
for the crash handler unit tests.

Bug: 971247
Change-Id: I74cc5a38279e6a8e97d8498445a98ffdf4671c44
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1647082
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
Auto-Submit: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#667828}

components/gwp_asan/crash_handler/crash_handler_unittest.cc

@@ -28,6 +28,7 @@
 #include "third_party/crashpad/crashpad/client/annotation.h"
 #include "third_party/crashpad/crashpad/client/crash_report_database.h"
 #include "third_party/crashpad/crashpad/client/crashpad_client.h"
+#include "third_party/crashpad/crashpad/client/crashpad_info.h"
 #include "third_party/crashpad/crashpad/handler/handler_main.h"
 #include "third_party/crashpad/crashpad/snapshot/minidump/process_snapshot_minidump.h"
 #include "third_party/crashpad/crashpad/tools/tool_support.h"
@@ -76,6 +77,13 @@ MULTIPROCESS_TEST_MAIN(CrashpadHandler) {
 
 // Child process that launches the crashpad handler and then crashes.
 MULTIPROCESS_TEST_MAIN(CrashingProcess) {
+#if defined(OS_MACOSX)
+  // Disable the system crash reporter from inspecting this crash (it is slow
+  // and causes test timeouts.)
+  crashpad::CrashpadInfo::GetCrashpadInfo()
+      ->set_system_crash_reporter_forwarding(crashpad::TriState::kDisabled);
+#endif
+
   base::NoDestructor<GuardedPageAllocator> gpa;
   gpa->Init(AllocatorState::kMaxMetadata, AllocatorState::kMaxMetadata,
             kTotalPages, base::DoNothing(), false);