Remove //net (except for Android test stuff) and sdch

net/dns/mdns_cache.h

-// Copyright (c) 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 NET_DNS_MDNS_CACHE_H_
-#define NET_DNS_MDNS_CACHE_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "net/base/net_export.h"
-
-namespace net {
-
-class ParsedDnsRecord;
-class RecordParsed;
-
-// mDNS Cache
-// This is a cache of mDNS records. It keeps track of expiration times and is
-// guaranteed not to return expired records. It also has facilities for timely
-// record expiration.
-class NET_EXPORT_PRIVATE MDnsCache {
- public:
-  // Key type for the record map. It is a 3-tuple of type, name and optional
-  // value ordered by type, then name, then optional value. This allows us to
-  // query for all records of a certain type and name, while also allowing us
-  // to set records of a certain type, name and optionally value as unique.
-  class Key {
-   public:
-    Key(unsigned type, const std::string& name, const std::string& optional);
-    Key(const Key&);
-    Key& operator=(const Key&);
-    ~Key();
-    bool operator<(const Key& key) const;
-    bool operator==(const Key& key) const;
-
-    unsigned type() const { return type_; }
-    const std::string& name() const  { return name_; }
-    const std::string& optional() const { return optional_; }
-
-    // Create the cache key corresponding to |record|.
-    static Key CreateFor(const RecordParsed* record);
-   private:
-    unsigned type_;
-    std::string name_;
-    std::string optional_;
-  };
-
-  typedef base::Callback<void(const RecordParsed*)> RecordRemovedCallback;
-
-  enum UpdateType {
-    RecordAdded,
-    RecordChanged,
-    RecordRemoved,
-    NoChange
-  };
-
-  MDnsCache();
-  ~MDnsCache();
-
-  // Return value indicates whether the record was added, changed
-  // (existed previously with different value) or not changed (existed
-  // previously with same value).
-  UpdateType UpdateDnsRecord(scoped_ptr<const RecordParsed> record);
-
-  // Check cache for record with key |key|. Return the record if it exists, or
-  // NULL if it doesn't.
-  const RecordParsed* LookupKey(const Key& key);
-
-  // Return records with type |type| and name |name|. Expired records will not
-  // be returned. If |type| is zero, return all records with name |name|.
-  void FindDnsRecords(unsigned type,
-                      const std::string& name,
-                      std::vector<const RecordParsed*>* records,
-                      base::Time now) const;
-
-  // Remove expired records, call |record_removed_callback| for every removed
-  // record.
-  void CleanupRecords(base::Time now,
-                      const RecordRemovedCallback& record_removed_callback);
-
-  // Returns a time less than or equal to the next time a record will expire.
-  // Is updated when CleanupRecords or UpdateDnsRecord are called. Returns
-  // base::Time when the cache is empty.
-  base::Time next_expiration() const { return next_expiration_; }
-
-  // Remove a record from the cache.  Returns a scoped version of the pointer
-  // passed in if it was removed, scoped null otherwise.
-  scoped_ptr<const RecordParsed> RemoveRecord(const RecordParsed* record);
-
-  void Clear();
-
- private:
-  typedef std::map<Key, const RecordParsed*> RecordMap;
-
-  // Get the effective expiration of a cache entry, based on its creation time
-  // and TTL. Does adjustments so entries with a TTL of zero will have a
-  // nonzero TTL, as explained in RFC 6762 Section 10.1.
-  static base::Time GetEffectiveExpiration(const RecordParsed* entry);
-
-  // Get optional part of the DNS key for shared records. For example, in PTR
-  // records this is the pointed domain, since multiple PTR records may exist
-  // for the same name.
-  static std::string GetOptionalFieldForRecord(
-      const RecordParsed* record);
-
-  RecordMap mdns_cache_;
-
-  base::Time next_expiration_;
-
-  DISALLOW_COPY_AND_ASSIGN(MDnsCache);
-};
-
-}  // namespace net
-
-#endif  // NET_DNS_MDNS_CACHE_H_