Trigger the SW reporter to run once a week for users with UMA enabled.

components/component_updater/pref_names.cc

 // Copyright 2014 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/component_updater/pref_names.h"
 
 namespace prefs {
 
 // String that represents the recovery component last downloaded version. This
 // takes the usual 'a.b.c.d' notation.
 const char kRecoveryComponentVersion[] = "recovery_component.version";
 
 #if defined(OS_WIN)
 // The number of attempts left to execute the SwReporter. This starts at the max
 // number of retries allowed, and goes down as attempts are made and is cleared
 // back to 0 when it successfully completes.
 const char kSwReporterExecuteTryCount[] = "software_reporter.execute_try_count";
+
+// The last time SwReporter was triggered.
+const char kSwReporterLastTimeTriggered[] =
+    "software_reporter.last_time_triggered";
 #endif
 
 }  // namespace prefs