Implement a method to get the total size of a cache entry

net/http/mock_http_cache.cc

 // 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.
 
 #include "net/http/mock_http_cache.h"
 
 #include <limits>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 85 matching lines @@
 
 base::Time MockDiskEntry::GetLastModified() const {
   return base::Time::Now();
 }
 
 int32_t MockDiskEntry::GetDataSize(int index) const {
   DCHECK(index >= 0 && index < kNumCacheEntryDataIndices);
   return static_cast<int32_t>(data_[index].size());
 }
 
+int64_t MockDiskEntry::GetEntrySize() const {
+  int64_t size = key_.size();
+  for (int i = 0; i < kNumCacheEntryDataIndices; ++i) {
+    size += GetDataSize(i);
+  }
+  return size;
+}
+
 int MockDiskEntry::ReadData(int index,
                             int offset,
                             IOBuffer* buf,
                             int buf_len,
                             const CompletionCallback& callback) {
   DCHECK(index >= 0 && index < kNumCacheEntryDataIndices);
   DCHECK(!callback.is_null());
 
   if (fail_requests_)
     return ERR_CACHE_READ_FAILURE;
@@ skipping 567 matching lines @@
   if (!callback_.is_null()) {
     if (!fail_)
       backend_->reset(new MockDiskCache());
     CompletionCallback cb = callback_;
     callback_.Reset();
     cb.Run(Result());  // This object can be deleted here.
   }
 }
 
 }  // namespace net