Adds shells of classes (PrerenderingOffliner and PrerenderingLoader) to intergrate from Background …

chrome/browser/android/offline_pages/prerendering_offliner.h

Index: chrome/browser/android/offline_pages/prerendering_offliner.h
diff --git a/chrome/browser/android/offline_pages/prerendering_offliner.h b/chrome/browser/android/offline_pages/prerendering_offliner.h
new file mode 100644
index 0000000000000000000000000000000000000000..155663c185d7b60a4fd0388aa862cee76e1031e7
--- /dev/null
+++ b/chrome/browser/android/offline_pages/prerendering_offliner.h
@@ -0,0 +1,43 @@
+// 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 CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_OFFLINER_H_
+#define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_OFFLINER_H_
+
+#include "chrome/browser/android/offline_pages/prerendering_loader.h"
+#include "components/offline_pages/background/offliner.h"
+#include "components/offline_pages/offline_page_model.h"
+
+class Profile;
+
+namespace content {
+class WebContents;
+}  // namespace content
+
+namespace offline_pages {
+
+// An Offliner implementation that attempts client-side rendering and saving
+// of an offline page. It uses the PrerenderingLoader to load the page and
+// the OfflinePageModel to save it.
+class PrerenderingOffliner : public Offliner {
+ public:
+  // TODO(dougarnett): consider not locking to profile (pass in request).

[fgorski, 2016/04/28 11:32:20]

If you are passing profile/browser context, you don't technically need to pass
OPM, as it is a keyed service.
If you can get away with not passing the profile, and pass the right specific
objects that would be best.

[dougarnett, 2016/04/28 20:13:13]

The right specific object I need would seem to be the PrerenderManager which is
a keyed service tied to BrowserContext/Profile.

+  PrerenderingOffliner(Profile* profile, OfflinePageModel* offline_page_model);
+  ~PrerenderingOffliner() override;
+
+  bool LoadAndSave(
+      const SavePageRequest& request,
+      const CompletionCallback& callback) override;
+
+  void Cancel();
+
+ private:
+  std::unique_ptr<PrerenderingLoader> loader_;
+  // Not owned.
+  OfflinePageModel* offline_page_model_;
+};
+
+}  // namespace offline_pages
+
+#endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_OFFLINER_H_