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

sync/engine/sync_scheduler_whitebox_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 "base/message_loop.h"
 #include "base/time.h"
 #include "sync/engine/sync_scheduler.h"
 #include "sync/sessions/sync_session_context.h"
 #include "sync/sessions/test_util.h"
 #include "sync/test/engine/fake_model_safe_worker_registrar.h"
@@ skipping 20 matching lines @@
     Syncer* syncer = new Syncer();
     ModelSafeRoutingInfo routes;
     routes[syncable::BOOKMARKS] = GROUP_UI;
     routes[syncable::NIGORI] = GROUP_PASSIVE;
     registrar_.reset(new FakeModelSafeWorkerRegistrar(routes));
     connection_.reset(new MockConnectionManager(NULL));
     context_ =
         new SyncSessionContext(
             connection_.get(), dir_maker_.directory(),
             registrar_.get(), &extensions_activity_monitor_,
-            std::vector<SyncEngineEventListener*>(), NULL);
+            std::vector<SyncEngineEventListener*>(), NULL, NULL);
     context_->set_notifications_enabled(true);
     context_->set_account_name("Test");
     scheduler_.reset(
         new SyncScheduler("TestSyncSchedulerWhitebox", context_, syncer));
   }
 
   virtual void TearDown() {
     scheduler_.reset();
   }
 
@@ skipping 209 matching lines @@
   struct SyncScheduler::SyncSessionJob job;
   job.purpose = SyncScheduler::SyncSessionJob::CONFIGURATION;
   job.scheduled_start = TimeTicks::Now();
   job.is_canary_job = true;
   SyncScheduler::JobProcessDecision decision = DecideOnJob(job);
 
   EXPECT_EQ(decision, SyncScheduler::CONTINUE);
 }
 
 }  // namespace browser_sync