Remove unused blink::WebStorageArea::memoryBytesUsedByCache().

content/renderer/dom_storage/dom_storage_cached_area.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 CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_
 #define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 34 matching lines @@
                const base::string16& value,
                const GURL& page_url);
   void RemoveItem(int connection_id,
                   const base::string16& key,
                   const GURL& page_url);
   void Clear(int connection_id, const GURL& page_url);
 
   void ApplyMutation(const base::NullableString16& key,
                      const base::NullableString16& new_value);
 
-  size_t MemoryBytesUsedByCache() const;
-
  private:
   friend class DOMStorageCachedAreaTest;
   friend class base::RefCounted<DOMStorageCachedArea>;
   ~DOMStorageCachedArea();
 
   // Primes the cache, loading all values for the area.
   void Prime(int connection_id);
   void PrimeIfNeeded(int connection_id) {
     if (!map_.get())
       Prime(connection_id);
@@ skipping 21 matching lines @@
   int64_t namespace_id_;
   GURL origin_;
   scoped_refptr<DOMStorageMap> map_;
   scoped_refptr<DOMStorageProxy> proxy_;
   base::WeakPtrFactory<DOMStorageCachedArea> weak_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_