Don't drop debug_info when posting to sync server fails

sync/test/sessions/mock_debug_info_getter.h

+// Copyright 2013 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 SYNC_SESSIONS_MOCK_DEBUG_INFO_GETTER_H_
+#define SYNC_SESSIONS_MOCK_DEBUG_INFO_GETTER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "sync/base/sync_export.h"
+#include "sync/protocol/sync.pb.h"
+#include "sync/sessions/debug_info_getter.h"
+
+namespace syncer {
+namespace sessions {
+
+// A mock implementation of DebugInfoGetter to be used in tests. Events added by
+// AddDebugEvent are accessible via DebugInfoGetter methods.
+class MockDebugInfoGetter : public sessions::DebugInfoGetter {
+ public:
+  MockDebugInfoGetter();
+  virtual ~MockDebugInfoGetter();
+
+  // DebugInfoGetter implementation.
+  virtual void GetDebugInfo(sync_pb::DebugInfo* debug_info) OVERRIDE;
+  virtual void ClearDebugInfo() OVERRIDE;
+
+  void AddDebugEvent();
+
+ private:
+  sync_pb::DebugInfo debug_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockDebugInfoGetter);
+};
+
+}  // namespace sessions
+}  // namespace syncer
+
+#endif  // SYNC_SESSIONS_MOCK_DEBUG_INFO_GETTER_H_