Revert of Implements RLZTrackerDelegate on iOS.

ios/chrome/browser/rlz/rlz_tracker_delegate_impl.cc

Index: ios/chrome/browser/rlz/rlz_tracker_delegate_impl.cc
diff --git a/ios/chrome/browser/rlz/rlz_tracker_delegate_impl.cc b/ios/chrome/browser/rlz/rlz_tracker_delegate_impl.cc
deleted file mode 100644
index 1261189583a6550276e535be6c657779f5ba768c..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/rlz/rlz_tracker_delegate_impl.cc
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2015 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 "ios/chrome/browser/rlz/rlz_tracker_delegate_impl.h"
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/prefs/pref_service.h"
-#include "components/google/core/browser/google_util.h"
-#include "components/omnibox/browser/omnibox_log.h"
-#include "components/search_engines/template_url.h"
-#include "components/search_engines/template_url_service.h"
-#include "ios/chrome/browser/application_context.h"
-#include "ios/chrome/browser/google/google_brand.h"
-#include "ios/chrome/browser/omnibox/omnibox_edit_model_observer_relay.h"
-#include "ios/chrome/browser/pref_names.h"
-#include "ios/chrome/browser/search_engines/template_url_service_factory.h"
-#include "ios/public/provider/chrome/browser/browser_state/chrome_browser_state.h"
-#include "ios/web/public/web_thread.h"
-
-RLZTrackerDelegateImpl::RLZTrackerDelegateImpl() {}
-
-RLZTrackerDelegateImpl::~RLZTrackerDelegateImpl() {}
-
-// static
-bool RLZTrackerDelegateImpl::IsGoogleDefaultSearch(
-    ios::ChromeBrowserState* browser_state) {
-  bool is_google_default_search = false;
-  TemplateURLService* template_url_service =
-      ios::TemplateURLServiceFactory::GetForBrowserState(browser_state);
-  if (template_url_service) {
-    const TemplateURL* url_template =
-        template_url_service->GetDefaultSearchProvider();
-    is_google_default_search = url_template &&
-                               url_template->url_ref().HasGoogleBaseURLs(
-                                   template_url_service->search_terms_data());
-  }
-  return is_google_default_search;
-}
-
-// static
-bool RLZTrackerDelegateImpl::IsGoogleHomepage(
-    ios::ChromeBrowserState* browser_state) {
-  return google_util::IsGoogleHomePageUrl(
-      GURL(browser_state->GetPrefs()->GetString(ios::prefs::kHomePage)));
-}
-
-// static
-bool RLZTrackerDelegateImpl::IsGoogleInStartpages(
-    ios::ChromeBrowserState* browser_state) {
-  // iOS does not have a notion of startpages.
-  return false;
-}
-
-void RLZTrackerDelegateImpl::Cleanup() {
-  on_omnibox_search_callback_.Reset();
-}
-
-bool RLZTrackerDelegateImpl::IsOnUIThread() {
-  return web::WebThread::CurrentlyOn(web::WebThread::UI);
-}
-
-base::SequencedWorkerPool* RLZTrackerDelegateImpl::GetBlockingPool() {
-  return web::WebThread::GetBlockingPool();
-}
-
-net::URLRequestContextGetter* RLZTrackerDelegateImpl::GetRequestContext() {
-  return GetApplicationContext()->GetSystemURLRequestContext();
-}
-
-bool RLZTrackerDelegateImpl::GetBrand(std::string* brand) {
-  return ios::google_brand::GetBrand(brand);
-}
-
-bool RLZTrackerDelegateImpl::IsBrandOrganic(const std::string& brand) {
-  return brand.empty() || ios::google_brand::IsOrganic(brand);
-}
-
-bool RLZTrackerDelegateImpl::GetReactivationBrand(std::string* brand) {
-  // iOS does not have reactivation brand.
-  return false;
-}
-
-bool RLZTrackerDelegateImpl::ShouldEnableZeroDelayForTesting() {
-  return false;
-}
-
-bool RLZTrackerDelegateImpl::GetLanguage(base::string16* language) {
-  // TODO(thakis): Implement.
-  NOTIMPLEMENTED();
-  return false;
-}
-
-bool RLZTrackerDelegateImpl::GetReferral(base::string16* referral) {
-  // The referral program is defunct and not used. No need to implement this
-  // function on non-Win platforms.
-  return true;
-}
-
-bool RLZTrackerDelegateImpl::ClearReferral() {
-  // The referral program is defunct and not used. No need to implement this
-  // function on non-Win platforms.
-  return true;
-}
-
-void RLZTrackerDelegateImpl::SetOmniboxSearchCallback(
-    const base::Closure& callback) {
-  DCHECK(!callback.is_null());
-  on_omnibox_search_callback_ = callback;
-  on_omnibox_url_opened_subscription_ =
-      OmniboxEditModelObserverRelay::GetInstance()->RegisterCallback(
-          base::Bind(&RLZTrackerDelegateImpl::OnURLOpenedFromOmnibox,
-                     base::Unretained(this)));
-}
-
-void RLZTrackerDelegateImpl::SetHomepageSearchCallback(
-    const base::Closure& callback) {
-  NOTREACHED();
-}
-
-void RLZTrackerDelegateImpl::OnURLOpenedFromOmnibox(OmniboxLog* log) {
-  // In M-36, we made NOTIFICATION_OMNIBOX_OPENED_URL fire more often than
-  // it did previously.  The RLZ folks want RLZ's "first search" detection
-  // to remain as unaffected as possible by this change.  This test is
-  // there to keep the old behavior.
-  if (!log->is_popup_open)
-    return;
-
-  on_omnibox_url_opened_subscription_.reset();
-
-  using std::swap;
-  base::Closure callback_to_run;
-  swap(callback_to_run, on_omnibox_search_callback_);
-  if (!callback_to_run.is_null())
-    callback_to_run.Run();
-}