[Cronet] Enable persistence mode for Sdch

net/sdch/sdch_owner.cc

 // 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.
 
 #include "net/sdch/sdch_owner.h"
 
 #include "base/bind.h"
 #include "base/debug/alias.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 466 matching lines @@
   dictionary_description->SetString(kDictionaryUrlKey, dictionary_url.spec());
   dictionary_description->SetDouble(kDictionaryLastUsedKey,
                                     last_used.ToDoubleT());
   dictionary_description->SetInteger(kDictionaryUseCountKey, use_count);
   dictionary_description->SetInteger(kDictionarySizeKey,
                                      dictionary_text.size());
   pref_dictionary_map->Set(server_hash, dictionary_description.Pass());
   load_times_[server_hash] = clock_->Now();
 }
 
+void SdchOwner::OnDictionaryAdded(SdchManager* manager,
+                                  const GURL& dictionary_url,
+                                  const std::string& server_hash) {
+}
+
+void SdchOwner::OnDictionaryRemoved(SdchManager* manager,
+                                    const std::string& server_hash) {
+}
+
 void SdchOwner::OnDictionaryUsed(SdchManager* manager,
                                  const std::string& server_hash) {
   base::Time now(clock_->Now());
   base::DictionaryValue* pref_dictionary_map =
       GetPersistentStoreDictionaryMap(pref_store_);
   ScopedPrefNotifier scoped_pref_notifier(pref_store_);
 
   base::Value* value = nullptr;
   bool success = pref_dictionary_map->Get(server_hash, &value);
   if (!success) {
@@ skipping 275 matching lines @@
   }
 
   return true;
 }
 
 bool SdchOwner::IsPersistingDictionaries() const {
   return in_memory_pref_store_.get() != nullptr;
 }
 
 }  // namespace net