Refactor SetClientID such that metrics rather than crash backs up the client id in Google Update set

chrome/installer/util/google_update_settings.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 "chrome/installer/util/google_update_settings.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 278 matching lines @@
                << google_update::kRegUsageStatsField << "; result: " << result;
   } else {
     result = key.WriteValue(google_update::kRegUsageStatsField, value);
     LOG_IF(ERROR, result != ERROR_SUCCESS) << "Failed setting "
         << google_update::kRegUsageStatsField << " in key " << reg_path
         << "; result: " << result;
   }
   return (result == ERROR_SUCCESS);
 }
 
-bool GoogleUpdateSettings::GetMetricsId(std::string* metrics_id) {
+bool GoogleUpdateSettings::RetrieveMetricsId(std::string* metrics_id) {
   base::string16 metrics_id16;
   bool rv = ReadGoogleUpdateStrKey(google_update::kRegMetricsId, &metrics_id16);
   *metrics_id = base::UTF16ToUTF8(metrics_id16);
   return rv;
 }
 
-bool GoogleUpdateSettings::SetMetricsId(const std::string& metrics_id) {
+bool GoogleUpdateSettings::SaveMetricsId(const std::string& metrics_id) {
   base::string16 metrics_id16 = base::UTF8ToUTF16(metrics_id);
   return WriteGoogleUpdateStrKey(google_update::kRegMetricsId, metrics_id16);
 }
 
 // EULA consent is only relevant for system-level installs.
 bool GoogleUpdateSettings::SetEULAConsent(
     const InstallationState& machine_state,
     BrowserDistribution* dist,
     bool consented) {
   DCHECK(dist);
@@ skipping 567 matching lines @@
   }
 
   // If the key or value was not present, return the empty string.
   if (result == ERROR_FILE_NOT_FOUND || result == ERROR_PATH_NOT_FOUND) {
     experiment_labels->clear();
     return true;
   }
 
   return result == ERROR_SUCCESS;
 }