Fix invalid cast to BrowsingDataRemoverImpl

chrome/browser/browsing_data/mock_browsing_data_remover.h

 // Copyright 2017 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_MOCK_BROWSING_DATA_REMOVER_H_
 #define CHROME_BROWSER_BROWSING_DATA_MOCK_BROWSING_DATA_REMOVER_H_
 
 #include <list>
 
 #include "chrome/browser/browsing_data/browsing_data_remover.h"
-#include "components/keyed_service/core/keyed_service.h"
 
 namespace content {
 class BrowserContext;
 }
 
 // A BrowsingDataRemover that only records Remove*() calls.
 // Some of the other methods are NOTIMPLEMENTED() as they are not needed for
 // existing testcases.
-class MockBrowsingDataRemover : public BrowsingDataRemover,
-                                public KeyedService {
+class MockBrowsingDataRemover : public BrowsingDataRemover {
  public:
   explicit MockBrowsingDataRemover(content::BrowserContext* context);
 
   ~MockBrowsingDataRemover() override;
 
   // KeyedService:
   void Shutdown() override;
 
   // BrowsingDataRemover:
   void Remove(const base::Time& delete_begin,
@@ skipping 74 matching lines @@
       int remove_mask,
       int origin_type_mask,
       std::unique_ptr<content::BrowsingDataFilterBuilder> filter_builder,
       Observer* observer);
 
   std::list<CallParameters> actual_calls_;
   std::list<CallParameters> expected_calls_;
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_MOCK_BROWSING_DATA_REMOVER_H_