| Index: net/disk_cache/memory/mem_backend_impl.h
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| diff --git a/net/disk_cache/memory/mem_backend_impl.h b/net/disk_cache/memory/mem_backend_impl.h
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| index 024da855016046c897922088863f5fd9a5bed2da..be4c08ff386280ef034576ba1c9c9ec21bfcd94d 100644
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| --- a/net/disk_cache/memory/mem_backend_impl.h
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| +++ b/net/disk_cache/memory/mem_backend_impl.h
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| @@ -98,6 +98,7 @@ class NET_EXPORT_PRIVATE MemBackendImpl final : public Backend {
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|    std::unique_ptr<Iterator> CreateIterator() override;
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|    void GetStats(base::StringPairs* stats) override {}
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|    void OnExternalCacheHit(const std::string& key) override;
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| +  size_t EstimateMemoryUsage() const override;
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|  
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|   private:
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|    class MemIterator;
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| 
 |