Add NetLog events for HttpServerPropertiesManager

ios/chrome/browser/browser_state/chrome_browser_state_impl_io_data.mm

 // Copyright 2015 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/browser/browser_state/chrome_browser_state_impl_io_data.h"
 
 #include <memory>
 #include <set>
 #include <utility>
 
@@ skipping 140 matching lines @@
 void ChromeBrowserStateImplIOData::Handle::LazyInitialize() const {
   DCHECK_CURRENTLY_ON(web::WebThread::UI);
   if (initialized_)
     return;
 
   // Set initialized_ to true at the beginning in case any of the objects
   // below try to get the ResourceContext pointer.
   initialized_ = true;
   PrefService* pref_service = browser_state_->GetPrefs();
   io_data_->http_server_properties_manager_ =
-      HttpServerPropertiesManagerFactory::CreateManager(pref_service);
+      HttpServerPropertiesManagerFactory::CreateManager(pref_service,
+                                                        /*net_log=*/nullptr);

[droger, 2017/06/21 16:28:55]

GetApplicationContext()->GetIOSChromeIOThread()->net_log();

[xunjieli, 2017/06/21 16:38:27]

Done.

   io_data_->set_http_server_properties(
       base::WrapUnique(io_data_->http_server_properties_manager_));
   io_data_->InitializeOnUIThread(browser_state_);
 }
 
 std::unique_ptr<
     ChromeBrowserStateIOData::IOSChromeURLRequestContextGetterVector>
 ChromeBrowserStateImplIOData::Handle::GetAllContextGetters() {
   IOSChromeURLRequestContextGetterMap::iterator iter;
   std::unique_ptr<IOSChromeURLRequestContextGetterVector> context_getters(
@@ skipping 183 matching lines @@
     const base::Closure& completion) {
   DCHECK_CURRENTLY_ON(web::WebThread::IO);
   DCHECK(initialized());
 
   DCHECK(transport_security_state());
   // Completes synchronously.
   transport_security_state()->DeleteAllDynamicDataSince(time);
   DCHECK(http_server_properties_manager_);
   http_server_properties_manager_->Clear(completion);
 }