Revert the merge of CrossSiteResourceHandler and NavigationResourceThrottle.

content/browser/frame_host/cross_site_transferring_request.cc

Index: content/browser/frame_host/cross_site_transferring_request.cc
diff --git a/content/browser/frame_host/cross_site_transferring_request.cc b/content/browser/frame_host/cross_site_transferring_request.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1a34fe721582c30889c6beaac679bce5fd2e3b07
--- /dev/null
+++ b/content/browser/frame_host/cross_site_transferring_request.cc
@@ -0,0 +1,46 @@
+// 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