Checks to enforce relative lifetimes for SdchManager.

net/base/sdch_manager.cc

 // 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.
 
 #include "net/base/sdch_manager.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 225 matching lines @@
 
 void SdchManager::DictionarySet::AddDictionary(
     const std::string& server_hash,
     const scoped_refptr<base::RefCountedData<SdchManager::Dictionary>>&
     dictionary) {
   DCHECK(dictionaries_.end() == dictionaries_.find(server_hash));
 
   dictionaries_[server_hash] = dictionary;
 }
 
-SdchManager::SdchManager() {
+SdchManager::SdchManager() : factory_(this) {
   DCHECK(thread_checker_.CalledOnValidThread());
 }
 
 SdchManager::~SdchManager() {
   DCHECK(thread_checker_.CalledOnValidThread());
   while (!dictionaries_.empty()) {
     auto it = dictionaries_.begin();
     dictionaries_.erase(it->first);
   }
 #if defined(OS_CHROMEOS)
@@ skipping 356 matching lines @@
   dictionaries_.erase(server_hash);
   return SDCH_OK;
 }
 
 // static
 scoped_ptr<SdchManager::DictionarySet>
 SdchManager::CreateEmptyDictionarySetForTesting() {
   return scoped_ptr<DictionarySet>(new DictionarySet).Pass();
 }
 
+// For investigation of http://crbug.com/454198; remove when resolved.
+base::WeakPtr<SdchManager> SdchManager::GetWeakPtr() {
+  return factory_.GetWeakPtr();
+}
+
 // static
 void SdchManager::UrlSafeBase64Encode(const std::string& input,
                                       std::string* output) {
   // Since this is only done during a dictionary load, and hashes are only 8
   // characters, we just do the simple fixup, rather than rewriting the encoder.
   base::Base64Encode(input, output);
   std::replace(output->begin(), output->end(), '+', '-');
   std::replace(output->begin(), output->end(), '/', '_');
 }
 
@@ skipping 33 matching lines @@
       entry_dict->SetInteger("tries", it->second.count);
     entry_dict->SetInteger("reason", it->second.reason);
     entry_list->Append(entry_dict);
   }
   value->Set("blacklisted", entry_list);
 
   return value;
 }
 
 }  // namespace net