Cleanup of QuicInMemoryCache to sync with internal version.

net/tools/quic/test_tools/quic_in_memory_cache_peer.h

+// 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.
+
+#ifndef NET_TOOLS_QUIC_TEST_TOOLS_QUIC_IN_MEMORY_CACHE_PEER_H_
+#define NET_TOOLS_QUIC_TEST_TOOLS_QUIC_IN_MEMORY_CACHE_PEER_H_
+
+#include "net/tools/quic/quic_in_memory_cache.h"
+
+namespace net {
+namespace tools {
+namespace test {
+
+class QuicInMemoryCachePeer {
+ public:
+  // Resets the singleton QuicInMemoryCache to a fresh state.
+  static void ResetForTests();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(QuicInMemoryCachePeer);
+};
+
+}  // namespace test
+}  // namespace tools
+}  // namespace net
+
+#endif  // NET_TOOLS_QUIC_TEST_TOOLS_QUIC_IN_MEMORY_CACHE_PEER_H_