[Most Visited] Removing Most Visited Tiles experiment code, which is obsolete.

chrome/browser/ui/webui/ntp/most_visited_handler.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/most_visited_handler.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/md5.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/history/most_visited_tiles_experiment.h"
-#include "chrome/browser/history/page_usage_data.h"
 #include "chrome/browser/history/top_sites.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/thumbnails/thumbnail_list_source.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 #include "chrome/browser/ui/webui/favicon_source.h"
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 #include "chrome/browser/ui/webui/ntp/ntp_stats.h"
@@ skipping 101 matching lines @@
   }
 }
 
 void MostVisitedHandler::SendPagesValue() {
   if (pages_value_) {
     Profile* profile = Profile::FromWebUI(web_ui());
     const base::DictionaryValue* url_blacklist =
         profile->GetPrefs()->GetDictionary(prefs::kNtpMostVisitedURLsBlacklist);
     bool has_blacklisted_urls = !url_blacklist->empty();
     history::TopSites* ts = profile->GetTopSites();
-    if (ts) {
+    if (ts)
       has_blacklisted_urls = ts->HasBlacklistedItems();
 
-      MaybeRemovePageValues();
-    }
-
     base::FundamentalValue has_blacklisted_urls_value(has_blacklisted_urls);
     web_ui()->CallJavascriptFunction("ntp.setMostVisitedPages",
                                      *pages_value_,
                                      has_blacklisted_urls_value);
     pages_value_.reset();
   }
 }
 
 void MostVisitedHandler::StartQueryForMostVisited() {
   history::TopSites* ts = Profile::FromWebUI(web_ui())->GetTopSites();
@@ skipping 53 matching lines @@
 void MostVisitedHandler::HandleMostVisitedSelected(
     const base::ListValue* args) {
   most_visited_viewed_ = true;
 }
 
 void MostVisitedHandler::SetPagesValueFromTopSites(
     const history::MostVisitedURLList& data) {
   pages_value_.reset(new base::ListValue);
 
   history::MostVisitedURLList top_sites(data);
-  history::MostVisitedTilesExperiment::MaybeShuffle(&top_sites);
-
   for (size_t i = 0; i < top_sites.size(); i++) {
     const history::MostVisitedURL& url = top_sites[i];
     base::DictionaryValue* page_value = new base::DictionaryValue();
     if (url.url.is_empty()) {
       page_value->SetBoolean("filler", true);
       pages_value_->Append(page_value);
       continue;
     }
 
     NewTabUI::SetUrlTitleAndDirection(page_value,
@@ skipping 24 matching lines @@
   history::TopSites* ts = Profile::FromWebUI(web_ui())->GetTopSites();
   if (ts)
     ts->AddBlacklistedURL(url);
   content::RecordAction(UserMetricsAction("MostVisited_UrlBlacklisted"));
 }
 
 std::string MostVisitedHandler::GetDictionaryKeyForUrl(const std::string& url) {
   return base::MD5String(url);
 }
 
-void MostVisitedHandler::MaybeRemovePageValues() {
-  if (!history::MostVisitedTilesExperiment::IsDontShowOpenURLsEnabled())
-    return;
-
-  TabStripModel* tab_strip_model = chrome::FindBrowserWithWebContents(
-      web_ui()->GetWebContents())->tab_strip_model();
-  history::TopSites* top_sites = Profile::FromWebUI(web_ui())->GetTopSites();
-  if (!tab_strip_model || !top_sites) {
-    NOTREACHED();
-    return;
-  }
-
-  std::set<std::string> open_urls;
-  chrome::GetOpenUrls(*tab_strip_model, *top_sites, &open_urls);
-  history::MostVisitedTilesExperiment::RemovePageValuesMatchingOpenTabs(
-      open_urls,
-      pages_value_.get());
-}
-
 // static
 void MostVisitedHandler::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterDictionaryPref(
       prefs::kNtpMostVisitedURLsBlacklist,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }