remove ntp app install hint

chrome/browser/ui/webui/ntp/new_tab_ui.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 "build/build_config.h"
 
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
 #include "base/lazy_instance.h"
 #include "base/memory/singleton.h"
-#include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_types.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/themes/theme_service.h"
@@ skipping 44 matching lines @@
 // finished.  Observed times are in the ~1200ms range on Windows.
 const int kTimeoutMs = 2000;
 
 // Strings sent to the page via jstemplates used to set the direction of the
 // HTML document based on locale.
 const char kRTLHtmlTextDirection[] = "rtl";
 const char kLTRHtmlTextDirection[] = "ltr";
 
 static base::LazyInstance<std::set<const WebUIController*> > g_live_new_tabs;
 
-// Group IDs for the web store link field trial.
-int g_footer_group = 0;
-int g_hint_group = 0;
-
-bool WebStoreLinkExperimentGroupIs(int group) {
-  return base::FieldTrialList::TrialExists(kWebStoreLinkExperiment) &&
-      base::FieldTrialList::FindValue(kWebStoreLinkExperiment) == group;
-}
-
 }  // namespace
 
-// The Web Store footer experiment FieldTrial name.
-const char kWebStoreLinkExperiment[] = "WebStoreLinkExperiment";
-
 ///////////////////////////////////////////////////////////////////////////////
 // NewTabUI
 
 NewTabUI::NewTabUI(content::WebUI* web_ui)
     : WebUIController(web_ui),
       showing_sync_bubble_(false) {
   g_live_new_tabs.Pointer()->insert(this);
   // Override some options on the Web UI.
   web_ui->HideFavicon();
 
@@ skipping 172 matching lines @@
   NewTabPageHandler::RegisterUserPrefs(prefs);
 #if !defined(OS_ANDROID)
   AppLauncherHandler::RegisterUserPrefs(prefs);
 #endif
   MostVisitedHandler::RegisterUserPrefs(prefs);
   if (NewTabUI::IsSuggestionsPageEnabled())
     SuggestionsHandler::RegisterUserPrefs(prefs);
 }
 
 // static
-void NewTabUI::SetupFieldTrials() {
-  scoped_refptr<base::FieldTrial> trial(
-      base::FieldTrialList::FactoryGetFieldTrial(
-          kWebStoreLinkExperiment, 1, "Disabled", 2025, 6, 1, NULL));
-
-  // Try to give the user a consistent experience, if possible.
-  if (base::FieldTrialList::IsOneTimeRandomizationEnabled())
-    trial->UseOneTimeRandomization();
-
-  // 33.3% in each group.
-  g_footer_group = trial->AppendGroup("FooterLink", 1);
-  g_hint_group = trial->AppendGroup("PlusIcon", 0);
-}
-
-// static
-bool NewTabUI::ShouldShowWebStoreFooterLink() {
-  const CommandLine* cli = CommandLine::ForCurrentProcess();
-  return cli->HasSwitch(switches::kEnableWebStoreLink) ||
-      WebStoreLinkExperimentGroupIs(g_footer_group);
-}
-
-// static
-bool NewTabUI::ShouldShowAppInstallHint() {
-  const CommandLine* cli = CommandLine::ForCurrentProcess();
-  return cli->HasSwitch(switches::kNtpAppInstallHint) ||
-      WebStoreLinkExperimentGroupIs(g_hint_group);
-}
-
-// static
 bool NewTabUI::ShouldShowApps() {
 #if defined(USE_ASH) || defined(OS_ANDROID)
   // Ash shows apps in app list thus should not show apps page in NTP4.
   // Android does not have apps.
   return false;
 #else
   return true;
 #endif
 }
 
@@ skipping 103 matching lines @@
 }
 
 void NewTabUI::NewTabHTMLSource::AddResource(const char* resource,
                                              const char* mime_type,
                                              int resource_id) {
   DCHECK(resource);
   DCHECK(mime_type);
   resource_map_[std::string(resource)] =
       std::make_pair(std::string(mime_type), resource_id);
 }