Add skeletons for the factories to create the request coordinator and

components/offline_pages/background/prerenderer_offliner.h

+// 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.
+
+#ifndef COMPONENTS_OFFLINE_PAGES_BACKGROUND_PRERENDERER_OFFLINER_H_
+#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_PRERENDERER_OFFLINER_H_
+
+#include "components/offline_pages/background/offliner.h"
+
+namespace offline_pages {
+
+class SavePageRequest;
+class OfflinerPolicy;
+
+// Interface of a class responsible for constructing an offline page given
+// a request with a URL.
+class PrerendererOffliner : public Offliner {

[fgorski, 2016/04/29 04:16:46]

I don't think you need this file. And it is not in the right place.

See https://codereview.chromium.org/1915983008/

[Pete Williamson, 2016/05/02 20:51:14]

Right.  I started this before Doug posted that changelist, and I haven't
integrated with it yet.  I do plan to move the factories. (As I said when I sent
this out yet, this is not yet ready for review, that was one of the reasons).

+ public:
+  PrerendererOffliner(OfflinerPolicy* policy);
+  ~PrerendererOffliner() override;
+
+  // Processes |request| to load and save an offline page.
+  // Returns whether the request was accepted or not.
+  bool LoadAndSave(
+      const SavePageRequest& request,
+        const CompletionCallback& callback) final;
+
+  // Clears the currently processing request, if any.
+  void Cancel() override;
+
+ private:
+  // This is owned by the request coordinator class, and should not be deleted
+  // when the offliner is deleted.
+  OfflinerPolicy* policy_;
+};
+
+}  // namespace offline_pages
+
+#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_PRERENDERER_OFFLINER_H_