Update Crashpad to a8d66ae7839a59d104b35ec6eb31f95cddd1813c

93f8aa8df989 posix: fix parameter name in signals test
a8d66ae7839a linux: don't set ptracer if yama doesn't exist

Change-Id: I1786c96dff5a0768dda8a7c32b274f3189e525bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1906899
Commit-Queue: Mark Mentovai <mark@chromium.org>
Auto-Submit: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714651}

third_party/crashpad/README.chromium

@@ -2,7 +2,7 @@ Name: Crashpad
 Short Name: crashpad
 URL: https://crashpad.chromium.org/
 Version: unknown
-Revision: bd1aa246ca185519dea0af1c5ca11656c41b0c80
+Revision: a8d66ae7839a59d104b35ec6eb31f95cddd1813c
 License: Apache 2.0
 License File: crashpad/LICENSE
 Security Critical: yes

third_party/crashpad/crashpad/client/crashpad_client_linux.cc

@@ -27,6 +27,7 @@
 #include "client/client_argv_handling.h"
 #include "third_party/lss/lss.h"
 #include "util/file/file_io.h"
+#include "util/file/filesystem.h"
 #include "util/linux/exception_handler_client.h"
 #include "util/linux/exception_information.h"
 #include "util/linux/scoped_pr_set_dumpable.h"
@@ -380,9 +381,14 @@ bool CrashpadClient::StartHandler(
     return false;
   }
 
+  pid_t handler_pid = -1;
+  if (!IsRegularFile(base::FilePath("/proc/sys/kernel/yama/ptrace_scope"))) {
+    handler_pid = 0;
+  }
+
   auto signal_handler = RequestCrashDumpHandler::Get();
   return signal_handler->Initialize(
-      std::move(client_sock), -1, &unhandled_signals_);
+      std::move(client_sock), handler_pid, &unhandled_signals_);
 }
 
 #if defined(OS_ANDROID) || defined(OS_LINUX)

third_party/crashpad/crashpad/util/posix/signals_test.cc

@@ -259,10 +259,10 @@ class SignalsTest : public Multiprocess {
     bool (*install_handlers)(Signals::Handler, int, Signals::OldActions*);
     if (Signals::IsCrashSignal(sig_)) {
       install_handlers = [](Signals::Handler handler,
-                            int sig,
+                            int flags,
                             Signals::OldActions* old_actions) {
         return Signals::InstallCrashHandlers(
-            handler, sig, old_actions, nullptr);
+            handler, flags, old_actions, nullptr);
       };
     } else if (Signals::IsTerminateSignal(sig_)) {
       install_handlers = Signals::InstallTerminateHandlers;