Checks to enforce relative lifetimes for SdchManager.

net/base/sdch_manager.h

 // Copyright (c) 2011 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.
 
 // This file contains the SdchManager class and two nested classes
 // (Dictionary, DictionarySet). SdchManager::Dictionary contains all
 // of the information about an SDCH dictionary. The manager is
 // responsible for storing those dictionaries, and provides access to
 // them through DictionarySet objects. A DictionarySet is an object
 // whose lifetime is under the control of the consumer. It is a
 // reference to a set of dictionaries, and guarantees that none of
 // those dictionaries will be destroyed while the DictionarySet
 // reference is alive.
 
 #ifndef NET_BASE_SDCH_MANAGER_H_
 #define NET_BASE_SDCH_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
 #include "net/base/sdch_problem_codes.h"
 #include "url/gurl.h"
 
 namespace base {
 class Clock;
 class Value;
@@ skipping 249 matching lines @@
 
   // Remove an SDCH dictionary
   SdchProblemCode RemoveSdchDictionary(const std::string& server_hash);
 
   // Registration for events generated by the SDCH subsystem.
   void AddObserver(SdchObserver* observer);
   void RemoveObserver(SdchObserver* observer);
 
   static scoped_ptr<DictionarySet> CreateEmptyDictionarySetForTesting();
 
+  // For investigation of http://crbug.com/454198; remove when resolved.
+  base::WeakPtr<SdchManager> GetWeakPtr();
+
  private:
   struct BlacklistInfo {
     BlacklistInfo() : count(0), exponential_count(0), reason(SDCH_OK) {}
 
     int count;               // # of times to refuse SDCH advertisement.
     int exponential_count;   // Current exponential backoff ratchet.
     SdchProblemCode reason;  // Why domain was blacklisted.
   };
 
   typedef std::map<std::string, BlacklistInfo> DomainBlacklistInfo;
@@ skipping 26 matching lines @@
   ExperimentSet allow_latency_experiment_;
 
   // Observers that want to be notified of SDCH events.
   // Assert list is empty on destruction since if there is an observer
   // that hasn't removed itself from the list, that observer probably
   // has a reference to the SdchManager.
   ObserverList<SdchObserver, true> observers_;
 
   base::ThreadChecker thread_checker_;
 
+  base::WeakPtrFactory<SdchManager> factory_;
+
   DISALLOW_COPY_AND_ASSIGN(SdchManager);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_SDCH_MANAGER_H_