mac processor: Add mapping for EXC_BAD_ACCESS/KERN_CODESIGN_ERROR

This code indicates termination under “kill” semantics due to a module’s
code signature becoming invalid.

Bug: chromium:1023239
Change-Id: I3d453af9ef6c6925edcf9c08dbd78e563877522f
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1930177
Reviewed-by: Robert Sesek <rsesek@chromium.org>

src/google_breakpad/common/minidump_exception_mac.h

diff --git a/src/google_breakpad/common/minidump_exception_mac.h b/src/google_breakpad/common/minidump_exception_mac.h
index a42a152..fadbf4e 100644
--- a/src/google_breakpad/common/minidump_exception_mac.h
+++ b/src/google_breakpad/common/minidump_exception_mac.h
@@ -87,6 +87,8 @@
       /* KERN_MEMORY_FAILURE */
   MD_EXCEPTION_CODE_MAC_MEMORY_ERROR       = 10,
       /* KERN_MEMORY_ERROR */
+  MD_EXCEPTION_CODE_MAC_CODESIGN_ERROR     = 50,
+      /* KERN_CODESIGN_ERROR */
 
   /* With MD_EXCEPTION_SOFTWARE */
   MD_EXCEPTION_CODE_MAC_BAD_SYSCALL  = 0x00010000,  /* Mach SIGSYS */

src/processor/minidump_processor.cc

diff --git a/src/processor/minidump_processor.cc b/src/processor/minidump_processor.cc
index 10a4173..b1ddbb8 100644
--- a/src/processor/minidump_processor.cc
+++ b/src/processor/minidump_processor.cc
@@ -804,6 +804,9 @@
             case MD_EXCEPTION_CODE_MAC_MEMORY_ERROR:
               reason.append("KERN_MEMORY_ERROR");
               break;
+            case MD_EXCEPTION_CODE_MAC_CODESIGN_ERROR:
+              reason.append("KERN_CODESIGN_ERROR");
+              break;
             default:
               // arm and ppc overlap
               if (raw_system_info->processor_architecture ==