Add metrics for interactions with the Apps Launcher promo dialog.

chrome/browser/ui/webui/ntp/ntp_resource_cache.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/ui/webui/ntp/ntp_resource_cache.h"
 
 #include <string>
 #include <vector>
 
 #include "apps/app_launcher.h"
-#include "apps/field_trial_names.h"
 #include "apps/pref_names.h"
 #include "base/command_line.h"
 #include "base/memory/ref_counted_memory.h"
-#include "base/metrics/field_trial.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/policy/browser_policy_connector.h"
@@ skipping 313 matching lines @@
   // profile is not the default.
   PrefService* prefs = profile_->GetPrefs();
   PrefService* local_state = g_browser_process->local_state();
   DictionaryValue load_time_data;
   load_time_data.SetBoolean("bookmarkbarattached",
       prefs->GetBoolean(prefs::kShowBookmarkBar));
   load_time_data.SetBoolean("hasattribution",
       ThemeServiceFactory::GetForProfile(profile_)->HasCustomImage(
           IDR_THEME_NTP_ATTRIBUTION));
   load_time_data.SetBoolean("showMostvisited", should_show_most_visited_page_);
-  std::string app_launcher_promo_group_name =
-      base::FieldTrialList::FindFullName(apps::kLauncherPromoTrialName);
-  bool show_app_launcher_promo =
-      !apps::IsAppLauncherEnabled() &&
-      local_state->GetBoolean(apps::prefs::kShowAppLauncherPromo) &&
-      (app_launcher_promo_group_name == apps::kShowLauncherPromoOnceGroupName ||
-       app_launcher_promo_group_name ==
-          apps::kResetShowLauncherPromoPrefGroupName);
-  load_time_data.SetBoolean("showAppLauncherPromo", show_app_launcher_promo);
+  load_time_data.SetBoolean("showAppLauncherPromo",
+      apps::ShouldShowAppLauncherPromo());
   load_time_data.SetBoolean("showRecentlyClosed",
       should_show_recently_closed_menu_);
   load_time_data.SetString("title",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE));
   load_time_data.SetString("mostvisited",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_MOST_VISITED));
   load_time_data.SetString("suggestions",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_SUGGESTIONS));
   load_time_data.SetString("restoreThumbnailsShort",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_RESTORE_THUMBNAILS_SHORT_LINK));
@@ skipping 260 matching lines @@
   // Get our template.
   static const base::StringPiece new_tab_theme_css(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_NEW_TAB_4_THEME_CSS));
 
   // Create the string from our template and the replacements.
   std::string css_string;
   css_string = ReplaceStringPlaceholders(new_tab_theme_css, subst, NULL);
   new_tab_css_ = base::RefCountedString::TakeString(&css_string);
 }