Adds unit tests for Offliner SavePage implementation.

chrome/browser/android/offline_pages/prerendering_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 CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_OFFLINER_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_OFFLINER_H_
 
 #include <memory>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 24 matching lines @@
   // Offliner implementation.
   bool LoadAndSave(const SavePageRequest& request,
                    const CompletionCallback& callback) override;
   void Cancel() override;
 
   // Allows a loader to be injected for testing. This may only be done once
   // and must be called before any of the Offliner interface methods are called.
   void SetLoaderForTesting(std::unique_ptr<PrerenderingLoader> loader);
 
  protected:
-  // Internal method for OfflinePageModel's check if url can be saved.
-  // Exposed for unit testing.
-  // TODO(dougarnett): Consider making OfflinePageModel mockable instead.
-  virtual bool CanSavePage(const GURL& url);
-
   // Internal method for requesting OfflinePageModel to save page.
   // Exposed for unit testing.
   // TODO(dougarnett): Consider making OfflinePageModel mockable instead.
   virtual void SavePage(const GURL& url,
                         const ClientId& client_id,
                         std::unique_ptr<OfflinePageArchiver> archiver,
                         const SavePageCallback& callback);
 
  private:
   // Callback logic for PrerenderingLoader::LoadPage().
@@ skipping 23 matching lines @@
   // case we receive a save page callback for an old, canceled request).
   SavePageRequest const* pending_request_;
   base::WeakPtrFactory<PrerenderingOffliner> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderingOffliner);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_PRERENDERING_OFFLINER_H_