Remove last usage functions from HostContentSettingsMap and clean up prefs

android_webview/browser/aw_permission_manager.h

 // Copyright 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 ANDROID_WEBVIEW_BROWSER_AW_PERMISSION_MANAGER_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_PERMISSION_MANAGER_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
@@ skipping 29 matching lines @@
           void(const std::vector<blink::mojom::PermissionStatus>&)>& callback)
       override;
   void CancelPermissionRequest(int request_id) override;
   void ResetPermission(content::PermissionType permission,
                        const GURL& requesting_origin,
                        const GURL& embedding_origin) override;
   blink::mojom::PermissionStatus GetPermissionStatus(
       content::PermissionType permission,
       const GURL& requesting_origin,
       const GURL& embedding_origin) override;
-  void RegisterPermissionUsage(content::PermissionType permission,
-                               const GURL& requesting_origin,
-                               const GURL& embedding_origin) override;
   int SubscribePermissionStatusChange(
       content::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;
 
  protected:
   void CancelPermissionRequests();
@@ skipping 22 matching lines @@
   std::unique_ptr<LastRequestResultCache> result_cache_;
 
   base::WeakPtrFactory<AwPermissionManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AwPermissionManager);
 };
 
 } // namespace android_webview
 
 #endif // ANDROID_WEBVIEW_BROWSER_AW_PERMISSION_MANAGER_H_