[Sync] Remove some http-related chrome deps from SyncBackendHostImpl.

chrome/browser/sync/profile_sync_test_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_TEST_UTIL_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_TEST_UTIL_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "components/sync_driver/sync_service_observer.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace base {
 class Thread;
+class Time;
+class TimeDelta;
 }
 
+// An empty syncer::NetworkTimeUpdateCallback. Used in various tests to
+// instantiate ProfileSyncService.
+void EmptyNetworkTimeUpdate(const base::Time&,
+                            const base::TimeDelta&,
+                            const base::TimeDelta&);
+
 ACTION_P(Notify, type) {
   content::NotificationService::current()->Notify(
       type,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 }
 
 ACTION(QuitUIMessageLoop) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   base::MessageLoop::current()->QuitWhenIdle();
@@ skipping 24 matching lines @@
 
   void NotifyTask(int type,
                   const content::NotificationSource& source,
                   const content::NotificationDetails& details);
 
   base::WaitableEvent done_event_;
   base::Thread* notify_thread_;
 };
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_TEST_UTIL_H_