Remove omnibox watcher.

chrome/browser/safe_browsing/incident_reporting/omnibox_watcher.h

-// Copyright 2014 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_SAFE_BROWSING_INCIDENT_REPORTING_OMNIBOX_WATCHER_H_
-#define CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_OMNIBOX_WATCHER_H_
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "chrome/browser/safe_browsing/incident_reporting/add_incident_callback.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-
-class Profile;
-
-namespace safe_browsing {
-
-// Observes all URLs opened via the omnibox, adding an incident to the
-// incident reporting service for those that are typed impossibly quickly.
-class OmniboxWatcher : public content::NotificationObserver {
- public:
-  OmniboxWatcher(Profile* profile, const AddIncidentCallback& callback);
-  ~OmniboxWatcher() override;
-
- private:
-  // content::NotificationObserver:
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  // The place to send a callback when we witness a suspicious omnibox
-  // navigation.
-  AddIncidentCallback incident_callback_;
-
-  // Registrar for receiving Omnibox event notifications.
-  content::NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(OmniboxWatcher);
-};
-
-}  // namespace safe_browsing
-
-#endif  // CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_OMNIBOX_WATCHER_H_