Update from https://crrev.com/304121

net/socket_stream/socket_stream_job_manager.cc

-// Copyright (c) 2011 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 "net/socket_stream/socket_stream_job_manager.h"
-
-#include "base/memory/singleton.h"
-
-namespace net {
-
-SocketStreamJobManager::SocketStreamJobManager() {
-}
-
-SocketStreamJobManager::~SocketStreamJobManager() {
-}
-
-// static
-SocketStreamJobManager* SocketStreamJobManager::GetInstance() {
-  return Singleton<SocketStreamJobManager>::get();
-}
-
-SocketStreamJob* SocketStreamJobManager::CreateJob(
-    const GURL& url, SocketStream::Delegate* delegate,
-    URLRequestContext* context, CookieStore* cookie_store) const {
-  // If url is invalid, create plain SocketStreamJob, which will close
-  // the socket immediately.
-  if (!url.is_valid()) {
-    SocketStreamJob* job = new SocketStreamJob();
-    job->InitSocketStream(new SocketStream(url, delegate, context,
-                                           cookie_store));
-    return job;
-  }
-
-  const std::string& scheme = url.scheme();  // already lowercase
-
-  base::AutoLock locked(lock_);
-  FactoryMap::const_iterator found = factories_.find(scheme);
-  if (found != factories_.end()) {
-    SocketStreamJob* job = found->second(url, delegate, context, cookie_store);
-    if (job)
-      return job;
-  }
-  SocketStreamJob* job = new SocketStreamJob();
-  job->InitSocketStream(new SocketStream(url, delegate, context, cookie_store));
-  return job;
-}
-
-SocketStreamJob::ProtocolFactory*
-SocketStreamJobManager::RegisterProtocolFactory(
-    const std::string& scheme, SocketStreamJob::ProtocolFactory* factory) {
-  base::AutoLock locked(lock_);
-
-  SocketStreamJob::ProtocolFactory* old_factory;
-  FactoryMap::iterator found = factories_.find(scheme);
-  if (found != factories_.end()) {
-    old_factory = found->second;
-  } else {
-    old_factory = NULL;
-  }
-  if (factory) {
-    factories_[scheme] = factory;
-  } else if (found != factories_.end()) {
-    factories_.erase(found);
-  }
-  return old_factory;
-}
-
-}  // namespace net