Move QuicVersionManager into standalone .h/.cc. No behavior change.

net/quic/core/quic_protocol.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_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 590 matching lines @@
   // |retransmitted_bytes| is the number of data bytes retransmitted.
   virtual void OnPacketRetransmitted(int retransmitted_bytes) = 0;
 
  protected:
   friend class base::RefCounted<QuicAckListenerInterface>;
 
   // Delegates are ref counted.
   virtual ~QuicAckListenerInterface() {}
 };
 
-// Used to generate filtered supported versions based on flags.
-class NET_EXPORT_PRIVATE QuicVersionManager {
- public:
-  explicit QuicVersionManager(QuicVersionVector supported_versions);
-  virtual ~QuicVersionManager();
-
-  // Returns currently supported QUIC versions.
-  const QuicVersionVector& GetSupportedVersions();
-
- protected:
-  // Maybe refilter filtered_supported_versions_ based on flags.
-  void MaybeRefilterSupportedVersions();
-
-  // Refilters filtered_supported_versions_.
-  virtual void RefilterSupportedVersions();
-
-  const QuicVersionVector& filtered_supported_versions() const {
-    return filtered_supported_versions_;
-  }
-
- private:
-  // FLAGS_quic_enable_version_36_v3
-  bool enable_version_36_;
-  // The list of versions that may be supported.
-  QuicVersionVector allowed_supported_versions_;
-  // This vector contains QUIC versions which are currently supported based
-  // on flags.
-  QuicVersionVector filtered_supported_versions_;
-};
-
 struct NET_EXPORT_PRIVATE AckListenerWrapper {
   AckListenerWrapper(QuicAckListenerInterface* listener,
                      QuicPacketLength data_length);
   AckListenerWrapper(const AckListenerWrapper& other);
   ~AckListenerWrapper();
 
   scoped_refptr<QuicAckListenerInterface> ack_listener;
   QuicPacketLength length;
 };
 
@@ skipping 106 matching lines @@
   QuicPathId path_id;
   bool has_crypto_handshake;
   int num_padding_bytes;
   EncryptionLevel encryption_level;
   QuicPacketNumberLength packet_number_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_