promo_resource_service fixes/cleanup for promos.

chrome/common/pref_names.cc

 // Copyright (c) 2011 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"
 
 namespace prefs {
 
@@ skipping 1259 matching lines @@
 
 // The last locale the promo was fetched for.
 const char kNTPPromoLocale[] = "ntp.promo_locale";
 
 // Whether promo should be shown to Dev builds, Beta and Dev, or all builds.
 const char kNTPPromoBuild[] = "ntp.promo_build";
 
 // True if user has explicitly closed the promo line.
 const char kNTPPromoClosed[] = "ntp.promo_closed";
 
-// Users are randomly divided into 16 groups in order to slowly roll out
+// Users are randomly divided into 100 groups in order to slowly roll out
 // special promos.
 const char kNTPPromoGroup[] = "ntp.promo_group";
 
 // Amount of time each promo group should be shown a promo that is being slowly
 // rolled out, in hours.
 const char kNTPPromoGroupTimeSlice[] = "ntp.promo_group_timeslice";
 
+// Number of groups to roll out this promo to.
+const char kNTPPromoGroupMax[] = "ntp.promo_group_max";
+
 // Promo line from server.
 const char kNTPPromoLine[] = "ntp.promo_line";
 
 // Dates between which the NTP should show a promotional line downloaded
 // from the promo server.
 const char kNTPPromoStart[] = "ntp.promo_start";
 const char kNTPPromoEnd[] = "ntp.promo_end";
 
 // Boolean indicating whether the web store is active for the current locale.
 const char kNTPWebStoreEnabled[] = "ntp.webstore_enabled";
@@ skipping 288 matching lines @@
 // specified.
 const char kCustomHandlersEnabled[] = "custom_handlers.enabled";
 
 // Integers that specify the policy refresh rate for device- and user-policy in
 // milliseconds. Not all values are meaningful, so it is clamped to a sane range
 // by the cloud policy subsystem.
 const char kDevicePolicyRefreshRate[] = "policy.device_refresh_rate";
 const char kUserPolicyRefreshRate[] = "policy.user_refresh_rate";
 
 }  // namespace prefs