Reland "Merge of CrossSiteResourceHandler and NavigationResourceThrottle."

content/browser/frame_host/cross_site_transferring_request.cc

-// 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 "content/browser/frame_host/cross_site_transferring_request.h"
-
-#include "base/logging.h"
-#include "content/browser/loader/cross_site_resource_handler.h"
-#include "content/browser/loader/resource_dispatcher_host_impl.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace content {
-
-namespace {
-
-void CancelRequestOnIOThread(GlobalRequestID global_request_id) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-
-  ResourceDispatcherHostImpl::Get()->CancelTransferringNavigation(
-      global_request_id);
-}
-
-}  // namespace
-
-CrossSiteTransferringRequest::CrossSiteTransferringRequest(
-    GlobalRequestID global_request_id)
-    : global_request_id_(global_request_id) {
-  DCHECK(global_request_id_ != GlobalRequestID());
-}
-
-CrossSiteTransferringRequest::~CrossSiteTransferringRequest() {
-  if (global_request_id_ == GlobalRequestID())
-    return;
-  BrowserThread::PostTask(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&CancelRequestOnIOThread, global_request_id_));
-}
-
-void CrossSiteTransferringRequest::ReleaseRequest() {
-  DCHECK_NE(-1, global_request_id_.child_id);
-  DCHECK_NE(-1, global_request_id_.request_id);
-  global_request_id_ = GlobalRequestID();
-}
-
-}  // namespace content