Revert of network_time_tracker: add temporary time protocol.

ios/chrome/test/testing_application_context.mm

 // Copyright 2014 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 "ios/chrome/test/testing_application_context.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/time/default_clock.h"
 #include "base/time/default_tick_clock.h"
 #include "components/network_time/network_time_tracker.h"
 #include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
-#include "net/url_request/url_request_context_getter.h"
 
 TestingApplicationContext::TestingApplicationContext()
     : application_locale_("en"),
       local_state_(nullptr),
       chrome_browser_state_manager_(nullptr),
       was_last_shutdown_clean_(false) {
   DCHECK(!GetApplicationContext());
   SetApplicationContext(this);
 }
 
@@ skipping 97 matching lines @@
   return nullptr;
 }
 
 network_time::NetworkTimeTracker*
 TestingApplicationContext::GetNetworkTimeTracker() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!network_time_tracker_) {
     DCHECK(local_state_);
     network_time_tracker_.reset(new network_time::NetworkTimeTracker(
         base::WrapUnique(new base::DefaultClock),
-        base::WrapUnique(new base::DefaultTickClock), local_state_,
-        GetSystemURLRequestContext()));
+        base::WrapUnique(new base::DefaultTickClock), local_state_));
   }
   return network_time_tracker_.get();
 }
 
 IOSChromeIOThread* TestingApplicationContext::GetIOSChromeIOThread() {
   DCHECK(thread_checker_.CalledOnValidThread());
   return nullptr;
 }
 
 gcm::GCMDriver* TestingApplicationContext::GetGCMDriver() {
@@ skipping 10 matching lines @@
 component_updater::ComponentUpdateService*
 TestingApplicationContext::GetComponentUpdateService() {
   DCHECK(thread_checker_.CalledOnValidThread());
   return nullptr;
 }
 
 CRLSetFetcher* TestingApplicationContext::GetCRLSetFetcher() {
   DCHECK(thread_checker_.CalledOnValidThread());
   return nullptr;
 }