Index: components/sync/protocol/proto_memory_estimations.h |
diff --git a/components/sync/protocol/proto_memory_estimations.h b/components/sync/protocol/proto_memory_estimations.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3aca9ff3041aa623f2b3099171702a88899f86fb |
--- /dev/null |
+++ b/components/sync/protocol/proto_memory_estimations.h |
@@ -0,0 +1,22 @@ |
+// Copyright 2016 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 COMPONENTS_SYNC_PROTOCOL_PROTO_MEMORY_ESTIMATIONS_H_ |
+#define COMPONENTS_SYNC_PROTOCOL_PROTO_MEMORY_ESTIMATIONS_H_ |
+ |
+#include <stddef.h> |
+ |
+namespace sync_pb { |
+ |
+// Estimates memory usage for a proto. |
+// Needs to be in sync_pb namespace for ADL to find it (when for example |
+// EstimateMemoryUsage() is called on a list of protos). |
+// Note: if you get linking errors you need to add explicit instantiation at |
+// the end of the implementation file. |
+template <class P> |
+size_t EstimateMemoryUsage(const P& proto); |
+ |
+} // namespace sync_pb |
+ |
+#endif // COMPONENTS_SYNC_PROTOCOL_PROTO_MEMORY_ESTIMATIONS_H_ |