Checks to enforce relative lifetimes for SdchManager.

net/sdch/sdch_owner.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_SDCH_SDCH_OWNER_H_
 #define NET_SDCH_SDCH_OWNER_H_
 
 #include <map>
 #include <string>
 
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_store.h"
 #include "net/base/sdch_observer.h"
 #include "net/url_request/sdch_dictionary_fetcher.h"
 
 class GURL;
 class PersistentPrefStore;
 class ValueMapPrefStore;
 class WriteablePrefStore;
 
 namespace base {
@@ skipping 85 matching lines @@
 
   // Schedule loading of all dictionaries described in |persisted_info|.
   // Returns false and does not schedule a load if |persisted_info| has an
   // unsupported version or no dictionaries key. Skips any dictionaries that are
   // malformed in |persisted_info|.
   bool SchedulePersistedDictionaryLoads(
       const base::DictionaryValue& persisted_info);
 
   bool IsPersistingDictionaries() const;
 
-  net::SdchManager* manager_;
+  // For investigation of http://crbug.com/454198; remove when resolved.
+  base::WeakPtr<net::SdchManager> manager_;
   scoped_ptr<net::SdchDictionaryFetcher> fetcher_;
 
   size_t total_dictionary_bytes_;
 
   scoped_ptr<base::Clock> clock_;
 
   size_t max_total_dictionary_size_;
   size_t min_space_for_dictionary_fetch_;
 
 #if defined(OS_CHROMEOS)
@@ skipping 27 matching lines @@
   // since the UMA histogram for use counts is only supposed to be since last
   // load.
   std::map<std::string, int> use_counts_at_load_;
 
   DISALLOW_COPY_AND_ASSIGN(SdchOwner);
 };
 
 }  // namespace net
 
 #endif  // NET_SDCH_SDCH_OWNER_H_