Add a size estimation mechanism to StoragePartitionHttpCacheDataRemover.

net/disk_cache/memory/mem_entry_impl.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/disk_cache/memory/mem_entry_impl.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
@@ skipping 165 matching lines @@
 Time MemEntryImpl::GetLastModified() const {
   return last_modified_;
 }
 
 int32 MemEntryImpl::GetDataSize(int index) const {
   if (index < 0 || index >= NUM_STREAMS)
     return 0;
   return data_size_[index];
 }
 
+int MemEntryImpl::GetEntrySize() const {
+  int result = 0;
+  for (int i = 0; i < NUM_STREAMS; ++i)
+    result += data_size_[i];
+  return result;
+}
+
 int MemEntryImpl::ReadData(int index, int offset, IOBuffer* buf, int buf_len,
                            const CompletionCallback& callback) {
   if (net_log_.IsCapturing()) {
     net_log_.BeginEvent(
         net::NetLog::TYPE_ENTRY_READ_DATA,
         CreateNetLogReadWriteDataCallback(index, offset, buf_len, false));
   }
 
   int result = InternalReadData(index, offset, buf, buf_len);
 
@@ skipping 426 matching lines @@
     scanned_len += kMaxSparseEntrySize - current_child_offset;
   }
   return scanned_len;
 }
 
 void MemEntryImpl::DetachChild(int child_id) {
   children_->erase(child_id);
 }
 
 }  // namespace disk_cache