Add result to DumpWithoutCrashing, to indicate whether it did anything.

components/browser_sync/profile_sync_components_factory_impl.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 "components/browser_sync/profile_sync_components_factory_impl.h"
 
 #include <utility>
 
 #include "base/debug/dump_without_crashing.h"
 #include "base/feature_list.h"
@@ skipping 125 matching lines @@
     syncer::ModelTypeSet enabled_types) {
   base::Closure error_callback =
       base::Bind(&syncer::ReportUnrecoverableError, channel_);
 
   // TODO(stanisc): can DEVICE_INFO be one of disabled datatypes?
   if (base::FeatureList::IsEnabled(switches::kSyncUSSDeviceInfo)) {
     // Use an error callback that always uploads a stacktrace if it can to help
     // get USS as stable as possible.
     sync_service->RegisterDataTypeController(
         base::MakeUnique<ModelTypeController>(
-            syncer::DEVICE_INFO, base::Bind(&base::debug::DumpWithoutCrashing),
+            syncer::DEVICE_INFO,
+            base::Bind(base::IgnoreResult(&base::debug::DumpWithoutCrashing)),
             sync_client_, ui_thread_));
   } else {
     sync_service->RegisterDataTypeController(
         base::MakeUnique<DeviceInfoDataTypeController>(
             error_callback, sync_client_,
             sync_service->GetLocalDeviceInfoProvider()));
   }
 
   // Autocomplete sync is enabled by default.  Register unless explicitly
   // disabled.
   if (!disabled_types.Has(syncer::AUTOFILL)) {
     if (base::FeatureList::IsEnabled(switches::kSyncUSSAutocomplete)) {
       sync_service->RegisterDataTypeController(
           base::MakeUnique<ModelTypeController>(
-              syncer::AUTOFILL, base::Bind(&base::debug::DumpWithoutCrashing),
+              syncer::AUTOFILL,
+              base::Bind(base::IgnoreResult(&base::debug::DumpWithoutCrashing)),
               sync_client_, db_thread_));
     } else {
       sync_service->RegisterDataTypeController(
           base::MakeUnique<AutofillDataTypeController>(
               db_thread_, error_callback, sync_client_, web_data_service_));
     }
   }
 
   // Autofill sync is enabled by default.  Register unless explicitly
   // disabled.
@@ skipping 259 matching lines @@
 
 // static
 void ProfileSyncComponentsFactoryImpl::OverridePrefsForUssTest(bool use_uss) {
   override_prefs_controller_to_uss_for_test_ = use_uss;
 }
 
 bool ProfileSyncComponentsFactoryImpl::
     override_prefs_controller_to_uss_for_test_ = false;
 
 }  // namespace browser_sync