[Sync] Add tests for migration triggered by notifications

chrome/browser/sync/notifier/p2p_notifier.h

 // Copyright (c) 2011 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.
 //
 // A notifier that uses p2p notifications based on XMPP push
 // notifications.  Used only for sync integration tests.
 
 #ifndef CHROME_BROWSER_SYNC_NOTIFIER_P2P_NOTIFIER_H_
 #define CHROME_BROWSER_SYNC_NOTIFIER_P2P_NOTIFIER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/sync/notifier/sync_notifier.h"
 #include "chrome/browser/sync/syncable/model_type.h"
 #include "jingle/notifier/listener/talk_mediator.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 
 namespace sync_notifier {
 
+// The channel to use for sync notifications.
+extern const char* kSyncP2PNotificationChannel;
+
 // The intended recipient(s) of a P2P notification.
 enum P2PNotificationTarget {
   NOTIFY_SELF,
   FIRST_NOTIFICATION_TARGET = NOTIFY_SELF,
   NOTIFY_OTHERS,
   NOTIFY_ALL,
   LAST_NOTIFICATION_TARGET = NOTIFY_ALL
 };
 
 std::string P2PNotificationTargetToString(
@@ skipping 84 matching lines @@
   // Whether |talk_mediator_| has notified us that notifications are
   // enabled.
   bool notifications_enabled_;
 
   syncable::ModelTypeSet enabled_types_;
   scoped_refptr<base::MessageLoopProxy> parent_message_loop_proxy_;
 };
 
 }  // namespace sync_notifier
 #endif  // CHROME_BROWSER_SYNC_NOTIFIER_P2P_NOTIFIER_H_