src/chrome/browser/rlz/rlz.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4 //
   5 // This code glues the RLZ library DLL with Chrome. It allows Chrome to work
   6 // with or without the DLL being present. If the DLL is not present the
   7 // functions do nothing and just return false.
   8
   9 #include "chrome/browser/rlz/rlz.h"
  10
  11 #include <algorithm>
  12
  13 #include "base/bind.h"
  14 #include "base/command_line.h"
  15 #include "base/debug/trace_event.h"
  16 #include "base/message_loop/message_loop.h"
  17 #include "base/prefs/pref_service.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/strings/utf_string_conversions.h"
  20 #include "chrome/browser/browser_process.h"
  21 #include "chrome/browser/chrome_notification_types.h"
  22 #include "chrome/browser/google/google_brand.h"
  23 #include "chrome/browser/omnibox/omnibox_log.h"
  24 #include "chrome/browser/prefs/session_startup_pref.h"
  25 #include "chrome/browser/search_engines/template_url_service_factory.h"
  26 #include "chrome/browser/ui/startup/startup_browser_creator.h"
  27 #include "chrome/common/chrome_switches.h"
  28 #include "chrome/common/pref_names.h"
  29 #include "components/google/core/browser/google_util.h"
  30 #include "components/search_engines/template_url.h"
  31 #include "components/search_engines/template_url_service.h"
  32 #include "content/public/browser/browser_thread.h"
  33 #include "content/public/browser/navigation_entry.h"
  34 #include "content/public/browser/notification_service.h"
  35 #include "net/http/http_util.h"
  36
  37 #if defined(OS_WIN)
  38 #include "chrome/installer/util/google_update_settings.h"
  39 #else
  40 namespace GoogleUpdateSettings {
  41 static bool GetLanguage(base::string16* language) {
  42   // TODO(thakis): Implement.
  43   NOTIMPLEMENTED();
  44   return false;
  45 }
  46
  47 // The referral program is defunct and not used. No need to implement these
  48 // functions on non-Win platforms.
  49 static bool GetReferral(base::string16* referral) {
  50   return true;
  51 }
  52 static bool ClearReferral() {
  53   return true;
  54 }
  55 }  // namespace GoogleUpdateSettings
  56 #endif
  57
  58 using content::BrowserThread;
  59 using content::NavigationEntry;
  60
  61 namespace {
  62
  63 // Maximum and minimum delay for financial ping we would allow to be set through
  64 // master preferences. Somewhat arbitrary, may need to be adjusted in future.
  65 const base::TimeDelta kMaxInitDelay = base::TimeDelta::FromSeconds(200);
  66 const base::TimeDelta kMinInitDelay = base::TimeDelta::FromSeconds(20);
  67
  68 bool IsBrandOrganic(const std::string& brand) {
  69   return brand.empty() || google_brand::IsOrganic(brand);
  70 }
  71
  72 void RecordProductEvents(bool first_run,
  73                          bool is_google_default_search,
  74                          bool is_google_homepage,
  75                          bool is_google_in_startpages,
  76                          bool already_ran,
  77                          bool omnibox_used,
  78                          bool homepage_used,
  79                          bool app_list_used) {
  80   TRACE_EVENT0("RLZ", "RecordProductEvents");
  81   // Record the installation of chrome. We call this all the time but the rlz
  82   // lib should ignore all but the first one.
  83   rlz_lib::RecordProductEvent(rlz_lib::CHROME,
  84                               RLZTracker::ChromeOmnibox(),
  85                               rlz_lib::INSTALL);
  86 #if !defined(OS_IOS)
  87   rlz_lib::RecordProductEvent(rlz_lib::CHROME,
  88                               RLZTracker::ChromeHomePage(),
  89                               rlz_lib::INSTALL);
  90   rlz_lib::RecordProductEvent(rlz_lib::CHROME,
  91                               RLZTracker::ChromeAppList(),
  92                               rlz_lib::INSTALL);
  93 #endif  // !defined(OS_IOS)
  94
  95   if (!already_ran) {
  96     // Do the initial event recording if is the first run or if we have an
  97     // empty rlz which means we haven't got a chance to do it.
  98     char omnibox_rlz[rlz_lib::kMaxRlzLength + 1];
  99     if (!rlz_lib::GetAccessPointRlz(RLZTracker::ChromeOmnibox(), omnibox_rlz,
 100                                     rlz_lib::kMaxRlzLength)) {
 101       omnibox_rlz[0] = 0;
 102     }
 103
 104     // Record if google is the initial search provider and/or home page.
 105     if ((first_run || omnibox_rlz[0] == 0) && is_google_default_search) {
 106       rlz_lib::RecordProductEvent(rlz_lib::CHROME,
 107                                   RLZTracker::ChromeOmnibox(),
 108                                   rlz_lib::SET_TO_GOOGLE);
 109     }
 110
 111 #if !defined(OS_IOS)
 112     char homepage_rlz[rlz_lib::kMaxRlzLength + 1];
 113     if (!rlz_lib::GetAccessPointRlz(RLZTracker::ChromeHomePage(), homepage_rlz,
 114                                     rlz_lib::kMaxRlzLength)) {
 115       homepage_rlz[0] = 0;
 116     }
 117
 118     if ((first_run || homepage_rlz[0] == 0) &&
 119         (is_google_homepage || is_google_in_startpages)) {
 120       rlz_lib::RecordProductEvent(rlz_lib::CHROME,
 121                                   RLZTracker::ChromeHomePage(),
 122                                   rlz_lib::SET_TO_GOOGLE);
 123     }
 124
 125     char app_list_rlz[rlz_lib::kMaxRlzLength + 1];
 126     if (!rlz_lib::GetAccessPointRlz(RLZTracker::ChromeAppList(), app_list_rlz,
 127                                     rlz_lib::kMaxRlzLength)) {
 128       app_list_rlz[0] = 0;
 129     }
 130
 131     // Record if google is the initial search provider and/or home page.
 132     if ((first_run || app_list_rlz[0] == 0) && is_google_default_search) {
 133       rlz_lib::RecordProductEvent(rlz_lib::CHROME,
 134                                   RLZTracker::ChromeAppList(),
 135                                   rlz_lib::SET_TO_GOOGLE);
 136     }
 137 #endif  // !defined(OS_IOS)
 138   }
 139
 140   // Record first user interaction with the omnibox. We call this all the
 141   // time but the rlz lib should ingore all but the first one.
 142   if (omnibox_used) {
 143     rlz_lib::RecordProductEvent(rlz_lib::CHROME,
 144                                 RLZTracker::ChromeOmnibox(),
 145                                 rlz_lib::FIRST_SEARCH);
 146   }
 147
 148 #if !defined(OS_IOS)
 149   // Record first user interaction with the home page. We call this all the
 150   // time but the rlz lib should ingore all but the first one.
 151   if (homepage_used || is_google_in_startpages) {
 152     rlz_lib::RecordProductEvent(rlz_lib::CHROME,
 153                                 RLZTracker::ChromeHomePage(),
 154                                 rlz_lib::FIRST_SEARCH);
 155   }
 156
 157   // Record first user interaction with the app list. We call this all the
 158   // time but the rlz lib should ingore all but the first one.
 159   if (app_list_used) {
 160     rlz_lib::RecordProductEvent(rlz_lib::CHROME,
 161                                 RLZTracker::ChromeAppList(),
 162                                 rlz_lib::FIRST_SEARCH);
 163   }
 164 #endif  // !defined(OS_IOS)
 165 }
 166
 167 bool SendFinancialPing(const std::string& brand,
 168                        const base::string16& lang,
 169                        const base::string16& referral) {
 170   rlz_lib::AccessPoint points[] = {RLZTracker::ChromeOmnibox(),
 171 #if !defined(OS_IOS)
 172                                    RLZTracker::ChromeHomePage(),
 173                                    RLZTracker::ChromeAppList(),
 174 #endif
 175                                    rlz_lib::NO_ACCESS_POINT};
 176   std::string lang_ascii(base::UTF16ToASCII(lang));
 177   std::string referral_ascii(base::UTF16ToASCII(referral));
 178   std::string product_signature;
 179 #if defined(OS_CHROMEOS)
 180   product_signature = "chromeos";
 181 #else
 182   product_signature = "chrome";
 183 #endif
 184   return rlz_lib::SendFinancialPing(rlz_lib::CHROME, points,
 185                                     product_signature.c_str(),
 186                                     brand.c_str(), referral_ascii.c_str(),
 187                                     lang_ascii.c_str(), false, true);
 188 }
 189
 190 }  // namespace
 191
 192 RLZTracker* RLZTracker::tracker_ = NULL;
 193
 194 // static
 195 RLZTracker* RLZTracker::GetInstance() {
 196   return tracker_ ? tracker_ : Singleton<RLZTracker>::get();
 197 }
 198
 199 RLZTracker::RLZTracker()
 200     : first_run_(false),
 201       send_ping_immediately_(false),
 202       is_google_default_search_(false),
 203       is_google_homepage_(false),
 204       is_google_in_startpages_(false),
 205       worker_pool_token_(BrowserThread::GetBlockingPool()->GetSequenceToken()),
 206       already_ran_(false),
 207       omnibox_used_(false),
 208       homepage_used_(false),
 209       app_list_used_(false),
 210       min_init_delay_(kMinInitDelay) {
 211 }
 212
 213 RLZTracker::~RLZTracker() {
 214 }
 215
 216 // static
 217 bool RLZTracker::InitRlzDelayed(bool first_run,
 218                                 bool send_ping_immediately,
 219                                 base::TimeDelta delay,
 220                                 bool is_google_default_search,
 221                                 bool is_google_homepage,
 222                                 bool is_google_in_startpages) {
 223   return GetInstance()->Init(first_run, send_ping_immediately, delay,
 224                              is_google_default_search, is_google_homepage,
 225                              is_google_in_startpages);
 226 }
 227
 228 // static
 229 bool RLZTracker::InitRlzFromProfileDelayed(Profile* profile,
 230                                            bool first_run,
 231                                            bool send_ping_immediately,
 232                                            base::TimeDelta delay) {
 233   bool is_google_default_search = false;
 234   TemplateURLService* template_url_service =
 235       TemplateURLServiceFactory::GetForProfile(profile);
 236   if (template_url_service) {
 237     const TemplateURL* url_template =
 238         template_url_service->GetDefaultSearchProvider();
 239     is_google_default_search =
 240         url_template && url_template->url_ref().HasGoogleBaseURLs(
 241             template_url_service->search_terms_data());
 242   }
 243
 244   PrefService* pref_service = profile->GetPrefs();
 245   bool is_google_homepage = google_util::IsGoogleHomePageUrl(
 246       GURL(pref_service->GetString(prefs::kHomePage)));
 247
 248   bool is_google_in_startpages = false;
 249 #if !defined(OS_IOS)
 250   // iOS does not have a notion of startpages.
 251   SessionStartupPref session_startup_prefs =
 252       StartupBrowserCreator::GetSessionStartupPref(
 253           *CommandLine::ForCurrentProcess(), profile);
 254   if (session_startup_prefs.type == SessionStartupPref::URLS) {
 255     is_google_in_startpages =
 256         std::count_if(session_startup_prefs.urls.begin(),
 257                       session_startup_prefs.urls.end(),
 258                       google_util::IsGoogleHomePageUrl) > 0;
 259   }
 260 #endif
 261
 262   if (!InitRlzDelayed(first_run, send_ping_immediately, delay,
 263                       is_google_default_search, is_google_homepage,
 264                       is_google_in_startpages)) {
 265     return false;
 266   }
 267
 268 #if !defined(OS_IOS)
 269   // Prime the RLZ cache for the home page access point so that its avaiable
 270   // for the startup page if needed (i.e., when the startup page is set to
 271   // the home page).
 272   GetAccessPointRlz(ChromeHomePage(), NULL);
 273 #endif  // !defined(OS_IOS)
 274
 275   return true;
 276 }
 277
 278 bool RLZTracker::Init(bool first_run,
 279                       bool send_ping_immediately,
 280                       base::TimeDelta delay,
 281                       bool is_google_default_search,
 282                       bool is_google_homepage,
 283                       bool is_google_in_startpages) {
 284   first_run_ = first_run;
 285   is_google_default_search_ = is_google_default_search;
 286   is_google_homepage_ = is_google_homepage;
 287   is_google_in_startpages_ = is_google_in_startpages;
 288   send_ping_immediately_ = send_ping_immediately;
 289
 290   // Enable zero delays for testing.
 291   if (CommandLine::ForCurrentProcess()->HasSwitch(::switches::kTestType))
 292     EnableZeroDelayForTesting();
 293
 294   delay = std::min(kMaxInitDelay, std::max(min_init_delay_, delay));
 295
 296   if (google_brand::GetBrand(&brand_) && !IsBrandOrganic(brand_)) {
 297     // Register for notifications from the omnibox so that we can record when
 298     // the user performs a first search.
 299     registrar_.Add(this, chrome::NOTIFICATION_OMNIBOX_OPENED_URL,
 300                    content::NotificationService::AllSources());
 301
 302 #if !defined(OS_IOS)
 303     // Register for notifications from navigations, to see if the user has used
 304     // the home page.
 305     registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
 306                    content::NotificationService::AllSources());
 307 #endif  // !defined(OS_IOS)
 308   }
 309   google_brand::GetReactivationBrand(&reactivation_brand_);
 310
 311   net::URLRequestContextGetter* context_getter =
 312       g_browser_process->system_request_context();
 313
 314   // Could be NULL; don't run if so.  RLZ will try again next restart.
 315   if (context_getter) {
 316     rlz_lib::SetURLRequestContext(context_getter);
 317     ScheduleDelayedInit(delay);
 318   }
 319
 320   return true;
 321 }
 322
 323 void RLZTracker::ScheduleDelayedInit(base::TimeDelta delay) {
 324   // The RLZTracker is a singleton object that outlives any runnable tasks
 325   // that will be queued up.
 326   BrowserThread::GetBlockingPool()->PostDelayedSequencedWorkerTask(
 327       worker_pool_token_,
 328       FROM_HERE,
 329       base::Bind(&RLZTracker::DelayedInit, base::Unretained(this)),
 330       delay);
 331 }
 332
 333 void RLZTracker::DelayedInit() {
 334   bool schedule_ping = false;
 335
 336   // For organic brandcodes do not use rlz at all. Empty brandcode usually
 337   // means a chromium install. This is ok.
 338   if (!IsBrandOrganic(brand_)) {
 339     RecordProductEvents(first_run_, is_google_default_search_,
 340                         is_google_homepage_, is_google_in_startpages_,
 341                         already_ran_, omnibox_used_, homepage_used_,
 342                         app_list_used_);
 343     schedule_ping = true;
 344   }
 345
 346   // If chrome has been reactivated, record the events for this brand
 347   // as well.
 348   if (!IsBrandOrganic(reactivation_brand_)) {
 349     rlz_lib::SupplementaryBranding branding(reactivation_brand_.c_str());
 350     RecordProductEvents(first_run_, is_google_default_search_,
 351                         is_google_homepage_, is_google_in_startpages_,
 352                         already_ran_, omnibox_used_, homepage_used_,
 353                         app_list_used_);
 354     schedule_ping = true;
 355   }
 356
 357   already_ran_ = true;
 358
 359   if (schedule_ping)
 360     ScheduleFinancialPing();
 361 }
 362
 363 void RLZTracker::ScheduleFinancialPing() {
 364   BrowserThread::GetBlockingPool()->PostSequencedWorkerTaskWithShutdownBehavior(
 365       worker_pool_token_,
 366       FROM_HERE,
 367       base::Bind(&RLZTracker::PingNowImpl, base::Unretained(this)),
 368       base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 369 }
 370
 371 void RLZTracker::PingNowImpl() {
 372   TRACE_EVENT0("RLZ", "RLZTracker::PingNowImpl");
 373   base::string16 lang;
 374   GoogleUpdateSettings::GetLanguage(&lang);
 375   if (lang.empty())
 376     lang = base::ASCIIToUTF16("en");
 377   base::string16 referral;
 378   GoogleUpdateSettings::GetReferral(&referral);
 379
 380   if (!IsBrandOrganic(brand_) && SendFinancialPing(brand_, lang, referral)) {
 381     GoogleUpdateSettings::ClearReferral();
 382
 383     {
 384       base::AutoLock lock(cache_lock_);
 385       rlz_cache_.clear();
 386     }
 387
 388     // Prime the RLZ cache for the access points we are interested in.
 389     GetAccessPointRlz(RLZTracker::ChromeOmnibox(), NULL);
 390 #if !defined(OS_IOS)
 391     GetAccessPointRlz(RLZTracker::ChromeHomePage(), NULL);
 392     GetAccessPointRlz(RLZTracker::ChromeAppList(), NULL);
 393 #endif  // !defined(OS_IOS)
 394   }
 395
 396   if (!IsBrandOrganic(reactivation_brand_)) {
 397     rlz_lib::SupplementaryBranding branding(reactivation_brand_.c_str());
 398     SendFinancialPing(reactivation_brand_, lang, referral);
 399   }
 400 }
 401
 402 bool RLZTracker::SendFinancialPing(const std::string& brand,
 403                                    const base::string16& lang,
 404                                    const base::string16& referral) {
 405   return ::SendFinancialPing(brand, lang, referral);
 406 }
 407
 408 void RLZTracker::Observe(int type,
 409                          const content::NotificationSource& source,
 410                          const content::NotificationDetails& details) {
 411   switch (type) {
 412     case chrome::NOTIFICATION_OMNIBOX_OPENED_URL:
 413       // In M-36, we made NOTIFICATION_OMNIBOX_OPENED_URL fire more often than
 414       // it did previously.  The RLZ folks want RLZ's "first search" detection
 415       // to remain as unaffected as possible by this change.  This test is
 416       // there to keep the old behavior.
 417       if (!content::Details<OmniboxLog>(details).ptr()->is_popup_open)
 418         break;
 419       RecordFirstSearch(ChromeOmnibox());
 420       registrar_.Remove(this, chrome::NOTIFICATION_OMNIBOX_OPENED_URL,
 421                         content::NotificationService::AllSources());
 422       break;
 423 #if !defined(OS_IOS)
 424     case content::NOTIFICATION_NAV_ENTRY_PENDING: {
 425       const NavigationEntry* entry =
 426           content::Details<content::NavigationEntry>(details).ptr();
 427       if (entry != NULL &&
 428           ((entry->GetTransitionType() &
 429             ui::PAGE_TRANSITION_HOME_PAGE) != 0)) {
 430         RecordFirstSearch(ChromeHomePage());
 431         registrar_.Remove(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
 432                           content::NotificationService::AllSources());
 433       }
 434       break;
 435     }
 436 #endif  // !defined(OS_IOS)
 437     default:
 438       NOTREACHED();
 439       break;
 440   }
 441 }
 442
 443 // static
 444 bool RLZTracker::RecordProductEvent(rlz_lib::Product product,
 445                                     rlz_lib::AccessPoint point,
 446                                     rlz_lib::Event event_id) {
 447   return GetInstance()->RecordProductEventImpl(product, point, event_id);
 448 }
 449
 450 bool RLZTracker::RecordProductEventImpl(rlz_lib::Product product,
 451                                         rlz_lib::AccessPoint point,
 452                                         rlz_lib::Event event_id) {
 453   // Make sure we don't access disk outside of the I/O thread.
 454   // In such case we repost the task on the right thread and return error.
 455   if (ScheduleRecordProductEvent(product, point, event_id))
 456     return true;
 457
 458   bool ret = rlz_lib::RecordProductEvent(product, point, event_id);
 459
 460   // If chrome has been reactivated, record the event for this brand as well.
 461   if (!reactivation_brand_.empty()) {
 462     rlz_lib::SupplementaryBranding branding(reactivation_brand_.c_str());
 463     ret &= rlz_lib::RecordProductEvent(product, point, event_id);
 464   }
 465
 466   return ret;
 467 }
 468
 469 bool RLZTracker::ScheduleRecordProductEvent(rlz_lib::Product product,
 470                                             rlz_lib::AccessPoint point,
 471                                             rlz_lib::Event event_id) {
 472   if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 473     return false;
 474
 475   BrowserThread::GetBlockingPool()->PostSequencedWorkerTaskWithShutdownBehavior(
 476       worker_pool_token_,
 477       FROM_HERE,
 478       base::Bind(base::IgnoreResult(&RLZTracker::RecordProductEvent),
 479                  product, point, event_id),
 480       base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 481
 482   return true;
 483 }
 484
 485 void RLZTracker::RecordFirstSearch(rlz_lib::AccessPoint point) {
 486   // Make sure we don't access disk outside of the I/O thread.
 487   // In such case we repost the task on the right thread and return error.
 488   if (ScheduleRecordFirstSearch(point))
 489     return;
 490
 491   bool* record_used = GetAccessPointRecord(point);
 492
 493   // Try to record event now, else set the flag to try later when we
 494   // attempt the ping.
 495   if (!RecordProductEvent(rlz_lib::CHROME, point, rlz_lib::FIRST_SEARCH))
 496     *record_used = true;
 497   else if (send_ping_immediately_ && point == ChromeOmnibox())
 498     ScheduleDelayedInit(base::TimeDelta());
 499 }
 500
 501 bool RLZTracker::ScheduleRecordFirstSearch(rlz_lib::AccessPoint point) {
 502   if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 503     return false;
 504   BrowserThread::GetBlockingPool()->PostSequencedWorkerTaskWithShutdownBehavior(
 505       worker_pool_token_,
 506       FROM_HERE,
 507       base::Bind(&RLZTracker::RecordFirstSearch,
 508                  base::Unretained(this), point),
 509       base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 510   return true;
 511 }
 512
 513 bool* RLZTracker::GetAccessPointRecord(rlz_lib::AccessPoint point) {
 514   if (point == ChromeOmnibox())
 515     return &omnibox_used_;
 516 #if !defined(OS_IOS)
 517   if (point == ChromeHomePage())
 518     return &homepage_used_;
 519   if (point == ChromeAppList())
 520     return &app_list_used_;
 521 #endif  // !defined(OS_IOS)
 522   NOTREACHED();
 523   return NULL;
 524 }
 525
 526 // static
 527 std::string RLZTracker::GetAccessPointHttpHeader(rlz_lib::AccessPoint point) {
 528   TRACE_EVENT0("RLZ", "RLZTracker::GetAccessPointHttpHeader");
 529   std::string extra_headers;
 530   base::string16 rlz_string;
 531   RLZTracker::GetAccessPointRlz(point, &rlz_string);
 532   if (!rlz_string.empty()) {
 533     net::HttpUtil::AppendHeaderIfMissing("X-Rlz-String",
 534                                          base::UTF16ToUTF8(rlz_string),
 535                                          &extra_headers);
 536   }
 537
 538   return extra_headers;
 539 }
 540
 541 // GetAccessPointRlz() caches RLZ strings for all access points. If we had
 542 // a successful ping, then we update the cached value.
 543 bool RLZTracker::GetAccessPointRlz(rlz_lib::AccessPoint point,
 544                                    base::string16* rlz) {
 545   TRACE_EVENT0("RLZ", "RLZTracker::GetAccessPointRlz");
 546   return GetInstance()->GetAccessPointRlzImpl(point, rlz);
 547 }
 548
 549 // GetAccessPointRlz() caches RLZ strings for all access points. If we had
 550 // a successful ping, then we update the cached value.
 551 bool RLZTracker::GetAccessPointRlzImpl(rlz_lib::AccessPoint point,
 552                                        base::string16* rlz) {
 553   // If the RLZ string for the specified access point is already cached,
 554   // simply return its value.
 555   {
 556     base::AutoLock lock(cache_lock_);
 557     if (rlz_cache_.find(point) != rlz_cache_.end()) {
 558       if (rlz)
 559         *rlz = rlz_cache_[point];
 560       return true;
 561     }
 562   }
 563
 564   // Make sure we don't access disk outside of the I/O thread.
 565   // In such case we repost the task on the right thread and return error.
 566   if (ScheduleGetAccessPointRlz(point))
 567     return false;
 568
 569   char str_rlz[rlz_lib::kMaxRlzLength + 1];
 570   if (!rlz_lib::GetAccessPointRlz(point, str_rlz, rlz_lib::kMaxRlzLength))
 571     return false;
 572
 573   base::string16 rlz_local(base::ASCIIToUTF16(std::string(str_rlz)));
 574   if (rlz)
 575     *rlz = rlz_local;
 576
 577   base::AutoLock lock(cache_lock_);
 578   rlz_cache_[point] = rlz_local;
 579   return true;
 580 }
 581
 582 bool RLZTracker::ScheduleGetAccessPointRlz(rlz_lib::AccessPoint point) {
 583   if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 584     return false;
 585
 586   base::string16* not_used = NULL;
 587   BrowserThread::GetBlockingPool()->PostSequencedWorkerTaskWithShutdownBehavior(
 588       worker_pool_token_,
 589       FROM_HERE,
 590       base::Bind(base::IgnoreResult(&RLZTracker::GetAccessPointRlz), point,
 591                  not_used),
 592       base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 593   return true;
 594 }
 595
 596 #if defined(OS_CHROMEOS)
 597 // static
 598 void RLZTracker::ClearRlzState() {
 599   GetInstance()->ClearRlzStateImpl();
 600 }
 601
 602 void RLZTracker::ClearRlzStateImpl() {
 603   if (ScheduleClearRlzState())
 604     return;
 605   rlz_lib::ClearAllProductEvents(rlz_lib::CHROME);
 606 }
 607
 608 bool RLZTracker::ScheduleClearRlzState() {
 609   if (!BrowserThread::CurrentlyOn(BrowserThread::UI))
 610     return false;
 611
 612   BrowserThread::GetBlockingPool()->PostSequencedWorkerTaskWithShutdownBehavior(
 613       worker_pool_token_,
 614       FROM_HERE,
 615       base::Bind(&RLZTracker::ClearRlzStateImpl,
 616                  base::Unretained(this)),
 617       base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 618   return true;
 619 }
 620 #endif
 621
 622 // static
 623 void RLZTracker::CleanupRlz() {
 624   GetInstance()->rlz_cache_.clear();
 625   GetInstance()->registrar_.RemoveAll();
 626   rlz_lib::SetURLRequestContext(NULL);
 627 }
 628
 629 // static
 630 void RLZTracker::EnableZeroDelayForTesting() {
 631   GetInstance()->min_init_delay_ = base::TimeDelta();
 632 }
 633
 634 #if !defined(OS_IOS)
 635 // static
 636 void RLZTracker::RecordAppListSearch() {
 637   GetInstance()->RecordFirstSearch(RLZTracker::ChromeAppList());
 638 }
 639 #endif