Dead-on-arrival GPU processes should have non-zero exit code.

content/gpu/gpu_main.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <stdlib.h>
 
 #include <memory>
 #include <utility>
 
@@ skipping 406 matching lines @@
       nullptr);
 #endif
 
   {
     TRACE_EVENT0("gpu", "Run Message Loop");
     base::RunLoop().Run();
   }
 
   child_thread->StopWatchdog();
 
-  return 0;
+  return dead_on_arrival ? 2 : 0;
 }
 
 namespace {
 
 void GetGpuInfoFromCommandLine(gpu::GPUInfo& gpu_info,
                                const base::CommandLine& command_line) {
   DCHECK(command_line.HasSwitch(switches::kGpuVendorID) &&
          command_line.HasSwitch(switches::kGpuDeviceID) &&
          command_line.HasSwitch(switches::kGpuDriverVersion));
   bool success = base::HexStringToUInt(
@@ skipping 183 matching lines @@
     return true;
   }
 
   return false;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace.
 
 }  // namespace content