Use mojo for Chrome Loading, Part 1

content/browser/loader/url_loader_factory_impl.cc

+// Copyright 2016 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/loader/url_loader_factory_impl.h"
+
+#include "content/browser/loader/resource_dispatcher_host_impl.h"
+#include "content/browser/loader/resource_message_filter.h"
+#include "content/common/resource_request.h"
+#include "content/common/url_loader.mojom.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace content {
+
+URLLoaderFactoryImpl::URLLoaderFactoryImpl(
+    scoped_refptr<ResourceMessageFilter> resource_message_filter,
+    mojo::InterfaceRequest<mojom::URLLoaderFactory> request)
+    : resource_message_filter_(std::move(resource_message_filter)),
+      binding_(this, std::move(request)) {
+  DCHECK(resource_message_filter_);
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+}
+
+URLLoaderFactoryImpl::~URLLoaderFactoryImpl() {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+}
+
+void URLLoaderFactoryImpl::CreateLoaderAndStart(
+    mojom::URLLoaderRequest request,
+    int32_t request_id,
+    const ResourceRequest& url_request,
+    mojom::URLLoaderClientPtr client) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  // TODO(yhirano): Provide the right routing ID.
+  const int routing_id = 0;
+  ResourceDispatcherHostImpl* rdh = ResourceDispatcherHostImpl::Get();
+  rdh->OnRequestResourceWithMojo(routing_id, request_id, url_request,
+                                 std::move(request), std::move(client),
+                                 resource_message_filter_.get());
+}
+
+void URLLoaderFactoryImpl::Create(
+    scoped_refptr<ResourceMessageFilter> filter,
+    mojo::InterfaceRequest<mojom::URLLoaderFactory> request) {
+  // The created instance is held by the StrongBinding.
+  new URLLoaderFactoryImpl(std::move(filter), std::move(request));
+}
+
+}  // namespace content