Add a new App launcher promo to the apps page / NTP.

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/file_util.h"
 #include "base/memory/ref_counted_memory.h"
+#include "base/metrics/field_trial.h"
 #include "base/prefs/pref_service.h"
 #include "base/string16.h"
 #include "base/stringprintf.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/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 149 matching lines @@
   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
                  content::Source<ThemeService>(
                      ThemeServiceFactory::GetForProfile(profile)));
   registrar_.Add(this, chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED,
                  content::NotificationService::AllSources());
 
   base::Closure callback = base::Bind(&NTPResourceCache::OnPreferenceChanged,
                                       base::Unretained(this));
 
   // Watch for pref changes that cause us to need to invalidate the HTML cache.
-  pref_change_registrar_.Init(profile_->GetPrefs());
-  pref_change_registrar_.Add(prefs::kSyncAcknowledgedSyncTypes, callback);
-  pref_change_registrar_.Add(prefs::kShowBookmarkBar, callback);
-  pref_change_registrar_.Add(prefs::kNtpShownPage, callback);
-  pref_change_registrar_.Add(prefs::kSyncPromoShowNTPBubble, callback);
-  pref_change_registrar_.Add(prefs::kHideWebStoreIcon, callback);
+  profile_pref_change_registrar_.Init(profile_->GetPrefs());
+  profile_pref_change_registrar_.Add(prefs::kSyncAcknowledgedSyncTypes,
+                                     callback);
+  profile_pref_change_registrar_.Add(prefs::kShowBookmarkBar, callback);
+  profile_pref_change_registrar_.Add(prefs::kNtpShownPage, callback);
+  profile_pref_change_registrar_.Add(prefs::kSyncPromoShowNTPBubble, callback);
+  profile_pref_change_registrar_.Add(prefs::kHideWebStoreIcon, callback);
+
+  // Some tests don't have a local state.
+  if (g_browser_process->local_state()) {
+    local_state_pref_change_registrar_.Init(g_browser_process->local_state());
+    local_state_pref_change_registrar_.Add(apps::prefs::kShowAppLauncherPromo,
+                                           callback);
+  }
 }
 
 NTPResourceCache::~NTPResourceCache() {}
 
 bool NTPResourceCache::NewTabCacheNeedsRefresh() {
 #if defined(OS_MACOSX)
   // Invalidate if the current value is different from the cached value.
   bool is_enabled = platform_util::IsSwipeTrackingFromScrollEventsEnabled();
   if (is_enabled != is_swipe_tracking_from_scroll_events_enabled_) {
     is_swipe_tracking_from_scroll_events_enabled_ = is_enabled;
@@ skipping 115 matching lines @@
 
   new_tab_incognito_html_ = base::RefCountedString::TakeString(&full_html);
 }
 
 void NTPResourceCache::CreateNewTabHTML() {
   // TODO(estade): these strings should be defined in their relevant handlers
   // (in GetLocalizedValues) and should have more legible names.
   // Show the profile name in the title and most visited labels if the current
   // 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 =
+      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("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 58 matching lines @@
   load_time_data.SetString("restoreSessionMenuItemText",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_OTHER_SESSIONS_OPEN_ALL));
   load_time_data.SetString("learn_more",
       l10n_util::GetStringUTF16(IDS_LEARN_MORE));
   load_time_data.SetString("tile_grid_screenreader_accessible_description",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_TILE_GRID_ACCESSIBLE_DESCRIPTION));
   load_time_data.SetString("page_switcher_change_title",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_SWITCHER_CHANGE_TITLE));
   load_time_data.SetString("page_switcher_same_title",
       l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_SWITCHER_SAME_TITLE));
+  load_time_data.SetString("appsPromoTitle",
+      l10n_util::GetStringUTF16(IDS_NEW_TAB_PAGE_APPS_PROMO_TITLE));
   // On Mac OS X 10.7+, horizontal scrolling can be treated as a back or
   // forward gesture. Pass through a flag that indicates whether or not that
   // feature is enabled.
   load_time_data.SetBoolean("isSwipeTrackingFromScrollEventsEnabled",
                             is_swipe_tracking_from_scroll_events_enabled_);
   load_time_data.SetBoolean("showApps", should_show_apps_page_);
   load_time_data.SetBoolean("showWebStoreIcon",
                             !prefs->GetBoolean(prefs::kHideWebStoreIcon));
 
 #if defined(OS_CHROMEOS)
@@ skipping 174 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);
 }