PlzNavigate: Add first version of NavigationURLLoader.

content/browser/loader/navigation_url_loader_factory.h

Index: content/browser/loader/navigation_url_loader_factory.h
diff --git a/content/browser/loader/navigation_url_loader_factory.h b/content/browser/loader/navigation_url_loader_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..381ba910344535c72acfd02dec209929bf5a5540
--- /dev/null
+++ b/content/browser/loader/navigation_url_loader_factory.h
@@ -0,0 +1,36 @@
+// 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.
+
+#ifndef CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_FACTORY_H_
+#define CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_FACTORY_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/loader/navigation_url_loader.h"
+
+namespace content {
+
+// NavigationURLLoader::Create uses the currently registered factory to create
+// the loader. This is intended for testing.
+class NavigationURLLoaderFactory {
+ public:
+  virtual scoped_ptr<NavigationURLLoader> CreateLoader(
+      BrowserContext* browser_context,
+      int64 frame_tree_node_id,
+      const CommonNavigationParams& common_params,
+      scoped_ptr<NavigationRequestInfo> request_info,
+      ResourceRequestBody* request_body,
+      NavigationURLLoader::Delegate* delegate) = 0;
+
+ protected:
+  NavigationURLLoaderFactory() {}
+  virtual ~NavigationURLLoaderFactory() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NavigationURLLoaderFactory);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_LOADER_NAVIGATION_URL_LOADER_FACTORY_H_