Add the ability to schedule any pending lossy prefs to be written.

chrome/browser/prefs/leveldb_pref_store.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 "chrome/browser/prefs/leveldb_pref_store.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_util.h"
 #include "base/json/json_string_value_serializer.h"
@@ skipping 338 matching lines @@
                                         weak_ptr_factory_.GetWeakPtr()));
 }
 
 void LevelDBPrefStore::CommitPendingWrite() {
   if (timer_.IsRunning()) {
     timer_.Stop();
     PersistFromUIThread();
   }
 }
 
+void LevelDBPrefStore::SchedulePendingLossyWrites() {
+  // LevelDBPrefStore does not support lossy prefs.
+}
+
 void LevelDBPrefStore::MarkForDeletion(const std::string& key) {
   if (read_only_)
     return;
   keys_to_delete_.insert(key);
   // Need to erase in case there's a set operation in the same batch that would
   // clobber this delete.
   keys_to_set_.erase(key);
   ScheduleWrite();
 }
 
@@ skipping 45 matching lines @@
   }
 
   // TODO(dgrogan): Call pref_filter_->FilterOnLoad
 
   if (error_delegate_.get() && read_error_ != PREF_READ_ERROR_NONE)
     error_delegate_->OnError(read_error_);
 
   FOR_EACH_OBSERVER(
       PrefStore::Observer, observers_, OnInitializationCompleted(true));
 }