Revert "Componentize chrome/browser/rlz"

chrome/browser/rlz/chrome_rlz_tracker_delegate.h

-// 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.
-
-#ifndef CHROME_BROWSER_RLZ_CHROME_RLZ_TRACKER_DELEGATE_H_
-#define CHROME_BROWSER_RLZ_CHROME_RLZ_TRACKER_DELEGATE_H_
-
-#include "base/callback_list.h"
-#include "base/macros.h"
-#include "components/rlz/rlz_tracker_delegate.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-
-class Profile;
-
-// ChromeRLZTrackerDelegate implements RLZTrackerDelegate abstract interface
-// and provides access to Chrome features.
-class ChromeRLZTrackerDelegate : public rlz::RLZTrackerDelegate,
-                                 public content::NotificationObserver {
- public:
-  ChromeRLZTrackerDelegate();
-  ~ChromeRLZTrackerDelegate() override;
-
-  static bool IsGoogleDefaultSearch(Profile* profile);
-  static bool IsGoogleHomepage(Profile* profile);
-  static bool IsGoogleInStartpages(Profile* profile);
-
- private:
-  // RLZTrackerDelegate implementation.
-  void Cleanup() override;
-  bool IsOnUIThread() override;
-  base::SequencedWorkerPool* GetBlockingPool() override;
-  net::URLRequestContextGetter* GetRequestContext() override;
-  bool GetBrand(std::string* brand) override;
-  bool IsBrandOrganic(const std::string& brand) override;
-  bool GetReactivationBrand(std::string* brand) override;
-  bool ShouldEnableZeroDelayForTesting() override;
-  bool GetLanguage(base::string16* language) override;
-  bool GetReferral(base::string16* referral) override;
-  bool ClearReferral() override;
-  void SetOmniboxSearchCallback(const base::Closure& callback) override;
-  void SetHomepageSearchCallback(const base::Closure& callback) override;
-
-  // content::NotificationObserver implementation:
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  content::NotificationRegistrar registrar_;
-  base::Closure on_omnibox_search_callback_;
-  base::Closure on_homepage_search_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChromeRLZTrackerDelegate);
-};
-
-#endif  // CHROME_BROWSER_RLZ_CHROME_RLZ_TRACKER_DELEGATE_H_