Add UMA to report Preferences File Corruption

chrome/common/pref_names.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/common/pref_names.h"
 
 #include "base/basictypes.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
 namespace prefs {
@@ skipping 2537 matching lines @@
 const char kDRMSalt[] = "settings.privacy.drm_salt";
 // A boolean pref that enables the (private) pepper GetDeviceID() call.
 const char kEnableDRM[] = "settings.privacy.drm_enabled";
 
 // A boolean per-profile pref that signals if the watchdog extension is
 // installed and active. We need to know if the watchdog extension active for
 // ActivityLog initialization before the extension system is initialized.
 const char kWatchdogExtensionActive[] =
     "profile.extensions.activity_log.watchdog_extension_active";
 
+// A dictionary pref which maps profile names to dictionary values which hold
+// hashes of profile prefs that we track to detect changes that happen outside
+// of Chrome.
+const char kProfilePreferenceHashes[] = "profile.preference_hashes";
+
 }  // namespace prefs