Move counters for passwords, history and autofill to components

chrome/browser/browsing_data/cache_counter.h

 // Copyright (c) 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_BROWSING_DATA_CACHE_COUNTER_H_
 #define CHROME_BROWSER_BROWSING_DATA_CACHE_COUNTER_H_
 
 #include <stdint.h>
 
 #include "base/memory/weak_ptr.h"
 #include "components/browsing_data/core/counters/browsing_data_counter.h"
 
 class Profile;
 
 class CacheCounter : public browsing_data::BrowsingDataCounter {
  public:
   explicit CacheCounter(Profile* profile);
   ~CacheCounter() override;
 
   // Whether this counter awaits the calculation result callback.
   // Used only for testing.
   bool Pending();
 
+  const char* GetPrefName() const override;
+
  private:
   Profile* profile_;
   bool pending_;
 
   base::WeakPtrFactory<CacheCounter> weak_ptr_factory_;
 
   void Count() override;
   void OnCacheSizeCalculated(int64_t bytes);
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_CACHE_COUNTER_H_