Remove last usage functions from HostContentSettingsMap and clean up prefs

content/test/mock_permission_manager.h

 // Copyright 2016 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 CONTENT_TEST_MOCK_PERMISSION_MANAGER_H_
 #define CONTENT_TEST_MOCK_PERMISSION_MANAGER_H_
 
 #include "content/public/browser/permission_manager.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "url/gurl.h"
@@ skipping 28 matching lines @@
       RenderFrameHost* render_frame_host,
       const GURL& requesting_origin,
       bool user_gesture,
       const base::Callback<
           void(const std::vector<blink::mojom::PermissionStatus>&)>& callback)
       override;
   void CancelPermissionRequest(int request_id) override {}
   void ResetPermission(PermissionType permission,
                        const GURL& requesting_origin,
                        const GURL& embedding_origin) override {}
-  void RegisterPermissionUsage(PermissionType permission,
-                               const GURL& requesting_origin,
-                               const GURL& embedding_origin) override {}
   int SubscribePermissionStatusChange(
       PermissionType permission,
       const GURL& requesting_origin,
       const GURL& embedding_origin,
       const base::Callback<void(blink::mojom::PermissionStatus)>& callback)
       override;
   void UnsubscribePermissionStatusChange(int subscription_id) override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockPermissionManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_MOCK_PERMISSION_MANAGER_H_