Delete dead AppsPromo code

chrome/browser/extensions/apps_promo.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/extensions/apps_promo.h"
-
-#include "base/base64.h"
-#include "base/command_line.h"
-#include "base/metrics/histogram.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/prefs/pref_service.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/common/chrome_notification_types.h"
-#include "chrome/common/chrome_switches.h"
-#include "chrome/common/extensions/extension.h"
-#include "chrome/common/pref_names.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/common/url_constants.h"
-#include "net/base/load_flags.h"
-#include "net/url_request/url_fetcher.h"
-#include "net/url_request/url_request_status.h"
-
-const int AppsPromo::kDefaultAppsCounterMax = 10;
-
-namespace {
-
-// The default logo for the promo.
-const char kDefaultLogo[] = "chrome://theme/IDR_WEBSTORE_ICON";
-
-// The default promo data (this is only used for testing with
-// --force-apps-promo-visible).
-const char kDefaultHeader[] = "Browse thousands of apps and games for Chrome";
-const char kDefaultButton[] = "Visit the Chrome Web Store";
-const char kDefaultExpire[] = "No thanks";
-const char kDefaultLink[] = "https://chrome.google.com/webstore";
-
-// Http success status code.
-const int kHttpSuccess = 200;
-
-// The match pattern for valid logo URLs.
-const char kValidLogoPattern[] = "https://*.google.com/*.png";
-
-// The prefix for 'data' URL images.
-const char kPNGDataURLPrefix[] = "data:image/png;base64,";
-
-// Returns the string pref at |path|, using |fallback| as the default (if there
-// is no pref value present). |fallback| is used for debugging in concert with
-// --force-apps-promo-visible.
-std::string GetStringPref(const char* path, const std::string& fallback) {
-  PrefService* local_state = g_browser_process->local_state();
-  std::string retval(local_state->GetString(path));
-  if (retval.empty() && CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kForceAppsPromoVisible)) {
-    retval = fallback;
-  }
-  return retval;
-}
-
-} // namespace
-
-AppsPromo::PromoData::PromoData() : user_group(AppsPromo::USERS_NONE) {}
-AppsPromo::PromoData::PromoData(const std::string& id,
-                                const std::string& header,
-                                const std::string& button,
-                                const GURL& link,
-                                const std::string& expire,
-                                const GURL& logo,
-                                const int user_group)
-    : id(id),
-      header(header),
-      button(button),
-      link(link),
-      expire(expire),
-      logo(logo),
-      user_group(user_group) {}
-
-AppsPromo::PromoData::~PromoData() {}
-
-// static
-void AppsPromo::RegisterPrefs(PrefService* local_state) {
-  std::string empty;
-  local_state->RegisterBooleanPref(prefs::kNtpWebStoreEnabled, false);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoId, empty);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoHeader, empty);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoButton, empty);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoLink, empty);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoLogo, empty);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoLogoSource, empty);
-  local_state->RegisterStringPref(prefs::kNtpWebStorePromoExpire, empty);
-  local_state->RegisterIntegerPref(prefs::kNtpWebStorePromoUserGroup, 0);
-}
-
-// static
-void AppsPromo::RegisterUserPrefs(PrefService* prefs) {
-  // Set the default value for the counter to max+1 since we don't install
-  // default apps for new users.
-  prefs->RegisterIntegerPref(prefs::kAppsPromoCounter,
-                             kDefaultAppsCounterMax + 1,
-                             PrefService::UNSYNCABLE_PREF);
-  prefs->RegisterBooleanPref(prefs::kDefaultAppsInstalled,
-                             false,
-                             PrefService::UNSYNCABLE_PREF);
-  prefs->RegisterStringPref(prefs::kNtpWebStorePromoLastId,
-                            std::string(),
-                            PrefService::UNSYNCABLE_PREF);
-  prefs->RegisterBooleanPref(prefs::kNtpHideWebStorePromo,
-                             false,
-                             PrefService::UNSYNCABLE_PREF);
-}
-
-// static
-bool AppsPromo::IsPromoSupportedForLocale() {
-  PrefService* local_state = g_browser_process->local_state();
-  // PromoResourceService will clear the promo data if the current locale is
-  // not supported.
-  return local_state->HasPrefPath(prefs::kNtpWebStorePromoId) &&
-      local_state->HasPrefPath(prefs::kNtpWebStorePromoHeader) &&
-      local_state->HasPrefPath(prefs::kNtpWebStorePromoButton) &&
-      local_state->HasPrefPath(prefs::kNtpWebStorePromoLink) &&
-      local_state->HasPrefPath(prefs::kNtpWebStorePromoLogo) &&
-      local_state->HasPrefPath(prefs::kNtpWebStorePromoExpire) &&
-      local_state->HasPrefPath(prefs::kNtpWebStorePromoUserGroup);
-}
-
-// static
-bool AppsPromo::IsWebStoreSupportedForLocale() {
-  PrefService* local_state = g_browser_process->local_state();
-  return local_state->GetBoolean(prefs::kNtpWebStoreEnabled);
-}
-
-// static
-void AppsPromo::SetWebStoreSupportedForLocale(bool supported) {
-  PrefService* local_state = g_browser_process->local_state();
-  local_state->SetBoolean(prefs::kNtpWebStoreEnabled, supported);
-}
-
-// static
-void AppsPromo::ClearPromo() {
-  PrefService* local_state = g_browser_process->local_state();
-  local_state->ClearPref(prefs::kNtpWebStoreEnabled);
-  local_state->ClearPref(prefs::kNtpWebStorePromoId);
-  local_state->ClearPref(prefs::kNtpWebStorePromoHeader);
-  local_state->ClearPref(prefs::kNtpWebStorePromoButton);
-  local_state->ClearPref(prefs::kNtpWebStorePromoLink);
-  local_state->ClearPref(prefs::kNtpWebStorePromoLogo);
-  local_state->ClearPref(prefs::kNtpWebStorePromoLogoSource);
-  local_state->ClearPref(prefs::kNtpWebStorePromoExpire);
-  local_state->ClearPref(prefs::kNtpWebStorePromoUserGroup);
-}
-
-// static
-AppsPromo::PromoData AppsPromo::GetPromo() {
-  PromoData data;
-  PrefService* local_state = g_browser_process->local_state();
-
-  data.id = GetStringPref(prefs::kNtpWebStorePromoId, "");
-  data.link = GURL(GetStringPref(prefs::kNtpWebStorePromoLink, kDefaultLink));
-  data.user_group = local_state->GetInteger(prefs::kNtpWebStorePromoUserGroup);
-  data.header = GetStringPref(prefs::kNtpWebStorePromoHeader, kDefaultHeader);
-  data.button = GetStringPref(prefs::kNtpWebStorePromoButton, kDefaultButton);
-  data.expire = GetStringPref(prefs::kNtpWebStorePromoExpire, kDefaultExpire);
-
-  GURL logo_url(local_state->GetString(prefs::kNtpWebStorePromoLogo));
-  if (logo_url.is_valid() && logo_url.SchemeIs(chrome::kDataScheme))
-    data.logo = logo_url;
-  else
-    data.logo = GURL(kDefaultLogo);
-
-  return data;
-}
-
-// static
-void AppsPromo::SetPromo(const AppsPromo::PromoData& data) {
-  PrefService* local_state = g_browser_process->local_state();
-  local_state->SetString(prefs::kNtpWebStorePromoId, data.id);
-  local_state->SetString(prefs::kNtpWebStorePromoButton, data.button);
-  local_state->SetString(prefs::kNtpWebStorePromoHeader, data.header);
-  local_state->SetString(prefs::kNtpWebStorePromoLink, data.link.spec());
-  local_state->SetString(prefs::kNtpWebStorePromoLogo, data.logo.spec());
-  local_state->SetString(prefs::kNtpWebStorePromoExpire, data.expire);
-  local_state->SetInteger(prefs::kNtpWebStorePromoUserGroup, data.user_group);
-}
-
-// static
-GURL AppsPromo::GetSourcePromoLogoURL() {
-  return GURL(GetStringPref(prefs::kNtpWebStorePromoLogoSource, ""));
-}
-
-// static
-void AppsPromo::SetSourcePromoLogoURL(const GURL& logo_source) {
-  PrefService* local_state = g_browser_process->local_state();
-  local_state->SetString(prefs::kNtpWebStorePromoLogoSource,
-                         logo_source.spec());
-}
-
-AppsPromo::AppsPromo(PrefService* prefs)
-    : prefs_(prefs) {
-  // Poppit, Entanglement
-  old_default_app_ids_.insert("mcbkbpnkkkipelfledbfocopglifcfmi");
-  old_default_app_ids_.insert("aciahcmjmecflokailenpkdchphgkefd");
-}
-
-AppsPromo::~AppsPromo() {}
-
-bool AppsPromo::ShouldShowPromo(const extensions::ExtensionIdSet& installed_ids,
-                                bool* just_expired) {
-  *just_expired = false;
-
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kForceAppsPromoVisible)) {
-    return true;
-  }
-
-  // Don't show the promo if the policy says not to.
-  if (prefs_->GetBoolean(prefs::kNtpHideWebStorePromo)) {
-    ExpireDefaultApps();
-    return false;
-  }
-
-  // Don't show the promo if one wasn't served to this locale.
-  if (!IsPromoSupportedForLocale())
-    return false;
-
-  int promo_counter = GetPromoCounter();
-  if (GetDefaultAppsInstalled() && promo_counter <= kDefaultAppsCounterMax) {
-    // If the default apps were installed from a previous Chrome version, we
-    // should still show the promo. If we don't have the exact set of default
-    // apps, this means that the user manually installed or uninstalled one.
-    // We no longer keep track of the default apps once others have been
-    // installed, so expire them immediately.
-    if (old_default_app_ids_ != installed_ids) {
-      ExpireDefaultApps();
-      return false;
-    }
-
-    if (promo_counter == kDefaultAppsCounterMax) {
-      *just_expired = true;
-
-      // The default apps have expired due to inaction, so ping PROMO_EXPIRE.
-      UMA_HISTOGRAM_ENUMERATION(extension_misc::kAppsPromoHistogram,
-                                extension_misc::PROMO_EXPIRE,
-                                extension_misc::PROMO_BUCKET_BOUNDARY);
-
-      ExpireDefaultApps();
-    } else {
-      SetPromoCounter(++promo_counter);
-    }
-    return true;
-  } else if (installed_ids.empty()) {
-    return true;
-  }
-
-  return false;
-}
-
-bool AppsPromo::ShouldShowAppLauncher(
-    const extensions::ExtensionIdSet& installed_ids) {
-  // On Chrome OS the default apps are installed via a separate mechanism that
-  // is always enabled. Therefore we always show the launcher.
-#if defined(OS_CHROMEOS)
-  return true;
-#else
-
-  // Always show the app launcher if an app is installed.
-  if (!installed_ids.empty())
-    return true;
-
-  // Otherwise, only show the app launcher if the web store is supported for the
-  // current locale.
-  return IsWebStoreSupportedForLocale();
-#endif
-}
-
-void AppsPromo::ExpireDefaultApps() {
-  SetPromoCounter(kDefaultAppsCounterMax + 1);
-}
-
-void AppsPromo::HidePromo() {
-  UMA_HISTOGRAM_ENUMERATION(extension_misc::kAppsPromoHistogram,
-                            extension_misc::PROMO_CLOSE,
-                            extension_misc::PROMO_BUCKET_BOUNDARY);
-
-  ExpireDefaultApps();
-}
-
-std::string AppsPromo::GetLastPromoId() {
-  return prefs_->GetString(prefs::kNtpWebStorePromoLastId);
-}
-
-void AppsPromo::SetLastPromoId(const std::string& id) {
-  prefs_->SetString(prefs::kNtpWebStorePromoLastId, id);
-}
-
-int AppsPromo::GetPromoCounter() const {
-  return prefs_->GetInteger(prefs::kAppsPromoCounter);
-}
-
-void AppsPromo::SetPromoCounter(int val) {
-  prefs_->SetInteger(prefs::kAppsPromoCounter, val);
-}
-
-bool AppsPromo::GetDefaultAppsInstalled() const {
-  return prefs_->GetBoolean(prefs::kDefaultAppsInstalled);
-}
-
-AppsPromo::UserGroup AppsPromo::GetCurrentUserGroup() const {
-  const PrefService::Preference* last_promo_id
-      = prefs_->FindPreference(prefs::kNtpWebStorePromoLastId);
-  CHECK(last_promo_id);
-  return last_promo_id->IsDefaultValue() ? USERS_NEW : USERS_EXISTING;
-}
-
-AppsPromoLogoFetcher::AppsPromoLogoFetcher(
-    Profile* profile,
-    const AppsPromo::PromoData& promo_data)
-    : profile_(profile),
-      promo_data_(promo_data) {
-  if (SupportsLogoURL()) {
-    if (HaveCachedLogo()) {
-      promo_data_.logo = AppsPromo::GetPromo().logo;
-      SavePromo();
-    } else {
-      FetchLogo();
-    }
-  } else {
-    // We only care about the source URL when this fetches the logo.
-    AppsPromo::SetSourcePromoLogoURL(GURL());
-    SavePromo();
-  }
-}
-
-AppsPromoLogoFetcher::~AppsPromoLogoFetcher() {}
-
-void AppsPromoLogoFetcher::OnURLFetchComplete(
-    const net::URLFetcher* source) {
-  std::string data;
-  std::string base64_data;
-
-  CHECK(source == url_fetcher_.get());
-  source->GetResponseAsString(&data);
-
-  if (source->GetStatus().is_success() &&
-      source->GetResponseCode() == kHttpSuccess &&
-      base::Base64Encode(data, &base64_data)) {
-    AppsPromo::SetSourcePromoLogoURL(promo_data_.logo);
-    promo_data_.logo = GURL(kPNGDataURLPrefix + base64_data);
-  } else {
-    // The logo wasn't downloaded correctly or we failed to encode it in
-    // base64. Reset the source URL so we fetch it again next time. AppsPromo
-    // will revert to the default logo.
-    AppsPromo::SetSourcePromoLogoURL(GURL());
-  }
-
-  SavePromo();
-}
-
-void AppsPromoLogoFetcher::FetchLogo() {
-  CHECK(promo_data_.logo.scheme() == chrome::kHttpsScheme);
-
-  url_fetcher_.reset(net::URLFetcher::Create(
-      0, promo_data_.logo, net::URLFetcher::GET, this));
-  url_fetcher_->SetRequestContext(
-      g_browser_process->system_request_context());
-  url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
-                             net::LOAD_DO_NOT_SAVE_COOKIES);
-  url_fetcher_->Start();
-}
-
-bool AppsPromoLogoFetcher::HaveCachedLogo() {
-  return promo_data_.logo == AppsPromo::GetSourcePromoLogoURL();
-}
-
-void AppsPromoLogoFetcher::SavePromo() {
-  AppsPromo::SetPromo(promo_data_);
-
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_WEB_STORE_PROMO_LOADED,
-      content::Source<Profile>(profile_),
-      content::NotificationService::NoDetails());
-}
-
-bool AppsPromoLogoFetcher::SupportsLogoURL() {
-  URLPattern allowed_urls(URLPattern::SCHEME_HTTPS, kValidLogoPattern);
-  return allowed_urls.MatchesURL(promo_data_.logo);
-}