Add Unclean Exit Watching to CPM

chrome/browser/performance_monitor/constants.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/browser/performance_monitor/constants.h"
 
 namespace performance_monitor {
 
-// The key to insert/retrieve information about the chrome version from the
-// database.
-const char kStateChromeVersion[] = "chrome_version";
 const char kMetricNotFoundError[] = "Mertic details not found.";
 const char kProcessChromeAggregate[] = "chrome_aggregate";
 const char kSampleMetricDescription[] = "A sample metric.";
 const char kSampleMetricName[] = "SAMPLE";
 
+// The state token to track Chrome versions in the database.
+const char kStateChromeVersion[] = "chrome_version";
+
+// The state token to precede a profile's name, to prevent any possible naming
+// collisions in the database.
+const char kStateProfilePrefix[] = "profile";
+
 }  // namespace performance_monitor