base::Bind: Convert chrome_benchmarking_message_filter.cc.

net/disk_cache/backend_impl.cc

Index: net/disk_cache/backend_impl.cc
diff --git a/net/disk_cache/backend_impl.cc b/net/disk_cache/backend_impl.cc
index cf9c6e12c8c1627344a755832ba244018b859274..d452f22234082a9230a76201c6becc1cec24de61 100644
--- a/net/disk_cache/backend_impl.cc
+++ b/net/disk_cache/backend_impl.cc
@@ -1451,6 +1451,13 @@ int BackendImpl::OpenNextEntry(void** iter, Entry** next_entry,
   return net::ERR_IO_PENDING;
 }
 
+int BackendImpl::OpenNextEntry(void** iter, Entry** next_entry,
+                               const net::CompletionCallback& callback) {
+  DCHECK(!callback.is_null());
+  background_queue_.OpenNextEntry(iter, next_entry, callback);
+  return net::ERR_IO_PENDING;
+}
+
 void BackendImpl::EndEnumeration(void** iter) {
   background_queue_.EndEnumeration(*iter);
   *iter = NULL;