[Sync] Display the client server traffic log in about:sync.

sync/sessions/sync_session_unittest.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 "sync/sessions/sync_session.h"
 
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop.h"
@@ skipping 25 matching lines @@
     std::vector<ModelSafeWorker*> workers;
     GetWorkers(&workers);
     return new SyncSession(context_.get(), this, SyncSourceInfo(),
                            routes_, workers);
   }
 
   virtual void SetUp() {
     context_.reset(
         new SyncSessionContext(
             NULL, NULL, this, &extensions_activity_monitor_,
-            std::vector<SyncEngineEventListener*>(), NULL));
+            std::vector<SyncEngineEventListener*>(), NULL, NULL));
     routes_.clear();
     routes_[syncable::BOOKMARKS] = GROUP_UI;
     routes_[syncable::AUTOFILL] = GROUP_DB;
     scoped_refptr<ModelSafeWorker> passive_worker(
         new FakeModelWorker(GROUP_PASSIVE));
     scoped_refptr<ModelSafeWorker> ui_worker(
         new FakeModelWorker(GROUP_UI));
     scoped_refptr<ModelSafeWorker> db_worker(
         new FakeModelWorker(GROUP_DB));
     workers_.clear();
@@ skipping 530 matching lines @@
   EXPECT_EQ(empty_payload, original[syncable::BOOKMARKS]);
   EXPECT_EQ(payload1, original[syncable::PASSWORDS]);
   EXPECT_EQ(payload1, original[syncable::AUTOFILL]);
   EXPECT_EQ(payload2, original[syncable::SESSIONS]);
   EXPECT_EQ(payload3, original[syncable::THEMES]);
 }
 
 }  // namespace
 }  // namespace sessions
 }  // namespace browser_sync