Move Extension into extensions namespace

chrome/browser/extensions/app_notification_storage.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/extensions/app_notification_storage.h"
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
@@ skipping 113 matching lines @@
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   CHECK(result);
   if (!OpenDbIfNeeded(false))
     return false;
   if (!db_.get())
     return true;
 
   scoped_ptr<leveldb::Iterator> iter(db_->NewIterator(read_options_));
   for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
     std::string key = iter->key().ToString();
-    if (Extension::IdIsValid(key))
+    if (extensions::Extension::IdIsValid(key))
       result->insert(key);
   }
 
   return true;
 }
 
 bool LevelDbAppNotificationStorage::Get(const std::string& extension_id,
                                         AppNotificationList* result) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   CHECK(result);
@@ skipping 74 matching lines @@
   options.create_if_missing = true;
   leveldb::DB* db = NULL;
   leveldb::Status status = leveldb::DB::Open(options, os_path, &db);
   if (!status.ok()) {
     LogLevelDbError(FROM_HERE, status);
     return false;
   }
   db_.reset(db);
   return true;
 }