In CrMallocErrorBreak, do not kill the process if errno is ENOMEM.

base/process_util_mac.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/process_util.h"
 
 #import <Cocoa/Cocoa.h>
 #include <crt_externs.h>
 #include <dlfcn.h>
 #include <errno.h>
@@ skipping 531 matching lines @@
   reference_addr += nl[0].n_value;
 
   return reinterpret_cast<malloc_error_break_t>(reference_addr);
 #endif  // ARCH_CPU_32_BITS
 
   return NULL;
 }
 
 void CrMallocErrorBreak() {
   g_original_malloc_error_break();
+
+  // Out of memory is certainly not heap corruption, and not necessarily
+  // something for which the process should be terminated. Leave that decision
+  // to the OOM killer.
+  if (errno == ENOMEM)
+    return;
+
   // A unit test checks this error message, so it needs to be in release builds.
   LOG(ERROR) <<
       "Terminating process due to a potential for future heap corruption";
   int* death_ptr = NULL;
   *death_ptr = 0xf00bad;
 }
 
 }  // namespace
 
 void EnableTerminationOnHeapCorruption() {
@@ skipping 581 matching lines @@
   }
 }
 
 }  // namespace
 
 void EnsureProcessTerminated(ProcessHandle process) {
   WaitForChildToDie(process, kWaitBeforeKillSeconds);
 }
 
 }  // namespace base