net: Implement ChannelIDSourceChromium, which is based on Chromium's

net/quic/crypto/channel_id_chromium.h

+// Copyright 2014 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_QUIC_CRYPTO_CHANNEL_ID_CHROMIUM_H_
+#define NET_QUIC_CRYPTO_CHANNEL_ID_CHROMIUM_H_
+
+#include <set>
+
+#include "net/quic/crypto/channel_id.h"
+
+namespace crypto {
+class ECPrivateKey;
+}  // namespace crypto
+
+namespace net {
+
+class ServerBoundCertService;
+
+class NET_EXPORT_PRIVATE ChannelIDKeyChromium: public ChannelIDKey {
+ public:
+  explicit ChannelIDKeyChromium(crypto::ECPrivateKey* ec_private_key);
+  virtual ~ChannelIDKeyChromium();
+
+  // ChannelIDKey interface
+  virtual bool Sign(base::StringPiece signed_data,
+                    std::string* out_signature) const OVERRIDE;
+  virtual std::string SerializeKey() const OVERRIDE;
+
+ private:
+  scoped_ptr<crypto::ECPrivateKey> ec_private_key_;
+};
+
+// ChannelIDSourceChromium implements the QUIC ChannelIDSource interface.
+class ChannelIDSourceChromium : public ChannelIDSource {
+ public:
+  explicit ChannelIDSourceChromium(
+      ServerBoundCertService* server_bound_cert_service);
+  virtual ~ChannelIDSourceChromium();
+
+  // ChannelIDSource interface
+  virtual QuicAsyncStatus GetChannelIDKey(
+      const std::string& hostname,
+      scoped_ptr<ChannelIDKey>* channel_id_key,
+      ChannelIDSourceCallback* callback) OVERRIDE;
+
+ private:
+  class Job;
+  typedef std::set<Job*> JobSet;
+
+  void OnJobComplete(Job* job);
+
+  // Set owning pointers to active jobs.
+  JobSet active_jobs_;
+
+  // The service for retrieving Channel ID keys.
+  ServerBoundCertService* const server_bound_cert_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChannelIDSourceChromium);
+};
+
+}  // namespace net
+
+#endif  // NET_QUIC_CRYPTO_CHANNEL_ID_CHROMIUM_H_