Add the ability for DevTools to wrap network transactions.

chrome/browser/profiles/profile_impl_io_data.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 "chrome/browser/profiles/profile_impl_io_data.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 425 matching lines @@
   main_context->set_server_bound_cert_service(server_bound_cert_service);
 
   net::HttpCache::DefaultBackend* main_backend =
       new net::HttpCache::DefaultBackend(
           net::DISK_CACHE,
           ChooseCacheBackendType(),
           lazy_params_->cache_path,
           lazy_params_->cache_max_size,
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE)
               .get());
-  net::HttpNetworkSession::Params network_session_params;
-  PopulateNetworkSessionParams(profile_params, &network_session_params);
-  net::HttpCache* main_cache = new net::HttpCache(
-      network_session_params, main_backend);
+  InitializeNetworkTransactionFactory(profile_params);
+  net::HttpTransactionFactory* network_layer = network_transaction_factory();
+  net::HttpCache* main_cache = new net::HttpCache(network_layer,
+      network_layer->GetSession()->net_log(), main_backend);

[mmenke, 2014/03/07 19:38:08]

This constructor doesn't initialize QUIC.  You should probably engage with the
QUIC team to ask how best to go about enabling it when using this constructor. 
Main issue is the QuicServerInfoFactoryAdaptor is owned by the cache, but used
by the session (Which is kinda weird).

   main_cache->InitializeInfiniteCache(lazy_params_->infinite_cache_path);
 
 #if defined(OS_ANDROID) || defined(OS_IOS)
   DataReductionProxySettings::InitDataReductionProxySession(
       main_cache->GetSession());
 #endif
 
   if (chrome_browser_net::ShouldUseInMemoryCookiesAndCache()) {
     main_cache->set_mode(
         chrome_browser_net::IsCookieRecordMode() ?
@@ skipping 247 matching lines @@
     const base::Closure& completion) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::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);
 }