Cleanup of QuicInMemoryCache to sync with internal version.

net/tools/quic/test_tools/quic_in_memory_cache_peer.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/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 {
+
+// static
+void QuicInMemoryCachePeer::ResetForTests() {
+  QuicInMemoryCache::GetInstance()->ResetForTests();
+}
+
+}  // namespace test
+}  // namespace tools
+}  // namespace net