Add crash keys about field trial shared memory errors.

chrome/app/chrome_crash_reporter_client_win.cc

 // Copyright 2013 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.
 
 // TODO(ananta/scottmg)
 // Add test coverage for Crashpad.
 #include "chrome/app/chrome_crash_reporter_client_win.h"
 
 #include <windows.h>
 
@@ skipping 184 matching lines @@
       // Temporary for https://crbug.com/668633.
       {"swdh_set_hosted_version_worker_pid", crash_keys::kSmallSize},
       {"swdh_set_hosted_version_host_pid", crash_keys::kSmallSize},
       {"swdh_set_hosted_version_is_new_process", crash_keys::kSmallSize},
       {"swdh_set_hosted_version_restart_count", crash_keys::kSmallSize},
 
       // Temporary for https://crbug.com/697745.
       {"engine_params", crash_keys::kMediumSize},
       {"engine1_params", crash_keys::kMediumSize},
       {"engine2_params", crash_keys::kMediumSize},
+
+      // Temporary for http://crbug.com/703649.
+      {"field_trial_shmem_create_error", crash_keys::kSmallSize},
+      {"field_trial_shmem_map_error", crash_keys::kSmallSize},
   };
 
   // This dynamic set of keys is used for sets of key value pairs when gathering
   // a collection of data, like command line switches or extension IDs.
   std::vector<base::debug::CrashKey> keys(std::begin(kFixedKeys),
                                           std::end(kFixedKeys));
 
   crash_keys::GetCrashKeysForCommandLineSwitches(&keys);
 
   // Register the extension IDs.
@@ skipping 210 matching lines @@
 
   return base::RandDouble() < probability;
 }
 
 bool ChromeCrashReporterClient::EnableBreakpadForProcess(
     const std::string& process_type) {
   // This is not used by Crashpad (at least on Windows).
   NOTREACHED();
   return true;
 }