Implementation of leveldb-backed PrefStore

chrome/browser/prefs/chrome_pref_service_factory.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 "chrome/browser/prefs/chrome_pref_service_factory.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
@@ skipping 210 matching lines @@
   // baseline on the success rate in addition to the error distribution.
   UMA_HISTOGRAM_ENUMERATION("PrefService.ReadError", error,
                             PersistentPrefStore::PREF_READ_ERROR_MAX_ENUM);
 
   if (error != PersistentPrefStore::PREF_READ_ERROR_NONE) {
 #if !defined(OS_CHROMEOS)
     // Failing to load prefs on startup is a bad thing(TM). See bug 38352 for
     // an example problem that this can cause.
     // Do some diagnosis and try to avoid losing data.
     int message_id = 0;
-    if (error <= PersistentPrefStore::PREF_READ_ERROR_JSON_TYPE) {
+    if (error <= PersistentPrefStore::PREF_READ_ERROR_JSON_TYPE ||
+        error >= PersistentPrefStore::PREF_READ_ERROR_LEVELDB_DESTROY_FAILED) {
       message_id = IDS_PREFERENCES_CORRUPT_ERROR;
-    } else if (error != PersistentPrefStore::PREF_READ_ERROR_NO_FILE) {
+    } else if (error != PersistentPrefStore::PREF_READ_ERROR_NO_FILE &&
+               error < PersistentPrefStore::
+                           PREF_READ_ERROR_LEVELDB_DESTROYED_REOPEN_SUCCESS) {
       message_id = IDS_PREFERENCES_UNREADABLE_ERROR;
     }
 
     if (message_id) {
       BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                               base::Bind(&ShowProfileErrorDialog,
                                          PROFILE_ERROR_PREFERENCES,
                                          message_id));
     }
 #else
@@ skipping 335 matching lines @@
   UMA_HISTOGRAM_BOOLEAN("Settings.InitializedFromMasterPrefs", success);
   return success;
 }
 
 void RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterInt64Pref(prefs::kProfilePreferenceResetTime, 0L);
   PrefHashStoreImpl::RegisterPrefs(registry);
 }
 
 }  // namespace chrome_prefs