Initial PlzNavigate RDH-side logic.

content/browser/loader/navigation_url_loader.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/loader/navigation_url_loader.h"
+
+#include "content/browser/loader/navigation_url_loader_factory.h"
+#include "content/browser/loader/navigation_url_loader_impl.h"
+
+namespace content {
+
+static NavigationURLLoaderFactory* g_factory = NULL;
+
+NavigationURLLoader* NavigationURLLoader::Create(
+    BrowserContext* browser_context,
+    int64 frame_tree_node_id,
+    const NavigationRequestInfo& request_info,
+    ResourceRequestBody* request_body,
+    Delegate* delegate) {
+  if (g_factory) {
+    return g_factory->CreateLoader(
+        browser_context, frame_tree_node_id, request_info, request_body,
+        delegate);
+  }
+  return new NavigationURLLoaderImpl(
+      browser_context, frame_tree_node_id, request_info, request_body,
+      delegate);
+}
+
+void NavigationURLLoader::SetFactoryForTesting(
+    NavigationURLLoaderFactory* factory) {
+  g_factory = factory;
+}
+
+}  // namespace content