Remove NTP4 intro bubble

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"
 
 namespace prefs {
 
@@ skipping 1387 matching lines @@
 // Time of the last, and next scheduled, extensions auto-update checks.
 const char kLastExtensionsUpdateCheck[] = "extensions.autoupdate.last_check";
 const char kNextExtensionsUpdateCheck[] = "extensions.autoupdate.next_check";
 // Version number of last blacklist check
 const char kExtensionBlacklistUpdateVersion[] =
     "extensions.blacklistupdate.version";
 
 // Keeps track of which sessions are collapsed in the Other Devices menu.
 const char kNtpCollapsedForeignSessions[] = "ntp.collapsed_foreign_sessions";
 
-// Number of times the NTP4 informational bubble has been shown.
-const char kNtp4IntroDisplayCount[] = "ntp.intro_display_count";
-
 // New Tab Page URLs that should not be shown as most visited thumbnails.
 const char kNtpMostVisitedURLsBlacklist[] = "ntp.most_visited_blacklist";
 
 // Data downloaded from promo resource pages (JSON, RSS) to be used to
 // dynamically deliver data for the new tab page.
 const char kNtpPromoResourceCache[] = "ntp.promo_resource_cache";
 
 #if defined(ENABLE_PROMO_RESOURCE_SERVICE)
 // Last time of update of promo_resource_cache.
 const char kNtpPromoResourceCacheUpdate[] = "ntp.promo_resource_cache_update";
@@ skipping 532 matching lines @@
 const char kNetworkProfileLastWarningTime[] =
     "network_profile.last_warning_time";
 
 #if defined(OS_MACOSX)
 // A timestamp of when the obsolete OS infobar was last shown to a user on 10.5.
 const char kMacLeopardObsoleteInfobarLastShown[] =
     "mac_105_obsolete_infobar_last_shown";
 #endif  // defined(OS_MACOSX)
 
 }  // namespace prefs