[Cleanup] Remove the no longer used GoogleSearch.AccessPoint metric.

chrome/browser/google/google_search_counter.h

-// 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.
-
-#ifndef CHROME_BROWSER_GOOGLE_GOOGLE_SEARCH_COUNTER_H_
-#define CHROME_BROWSER_GOOGLE_GOOGLE_SEARCH_COUNTER_H_
-
-#include "base/memory/singleton.h"
-#include "components/google/core/browser/google_search_metrics.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-
-namespace content {
-class NavigationEntry;
-}
-
-// A listener for counting Google searches from various search access points. No
-// actual search query content is observed. See GoogleSearchMetrics for more
-// details about these access points.
-class GoogleSearchCounter : content::NotificationObserver {
- public:
-  // Initialize the global instance.
-  static void RegisterForNotifications();
-
-  // Return the singleton instance of GoogleSearchCounter.
-  static GoogleSearchCounter* GetInstance();
-
-  // Returns the Google search access point for the given |entry|. This method
-  // assumes that we have already verified that |entry|'s URL is a Google search
-  // URL.
-  GoogleSearchMetrics::AccessPoint GetGoogleSearchAccessPointForSearchNavEntry(
-      const content::NavigationEntry& entry) const;
-
-  // Returns true if |details| is valid and corresponds to a search results
-  // page.
-  bool ShouldRecordCommittedDetails(
-      const content::NotificationDetails& details) const;
-
-  const GoogleSearchMetrics* search_metrics() const {
-    return search_metrics_.get();
-  }
-
- private:
-  friend struct base::DefaultSingletonTraits<GoogleSearchCounter>;
-  friend class GoogleSearchCounterTest;
-  friend class GoogleSearchCounterAndroidTest;
-
-  GoogleSearchCounter();
-  ~GoogleSearchCounter() override;
-
-  void ProcessCommittedEntry(const content::NotificationSource& source,
-                             const content::NotificationDetails& details);
-
-  // Replace the internal metrics object with a dummy or a mock. This instance
-  // takes ownership of |search_metrics|.
-  void SetSearchMetricsForTesting(GoogleSearchMetrics* search_metrics);
-
-  // Register this counter for all notifications we care about.
-  void RegisterForNotificationsInternal();
-
-  // content::NotificationObserver
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
-  content::NotificationRegistrar registrar_;
-  scoped_ptr<GoogleSearchMetrics> search_metrics_;
-
-  DISALLOW_COPY_AND_ASSIGN(GoogleSearchCounter);
-};
-
-#endif  // CHROME_BROWSER_GOOGLE_GOOGLE_SEARCH_COUNTER_H_