Improve FaviconHandler tests by testing public API

components/favicon/content/content_favicon_driver.h

 // Copyright 2015 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_FAVICON_CONTENT_CONTENT_FAVICON_DRIVER_H_
 #define COMPONENTS_FAVICON_CONTENT_CONTENT_FAVICON_DRIVER_H_
 
 #include "base/macros.h"
 #include "components/favicon/core/favicon_driver_impl.h"
 #include "content/public/browser/reload_type.h"
@@ skipping 32 matching lines @@
   void SaveFavicon();
 
   // FaviconDriver implementation.
   gfx::Image GetFavicon() const override;
   bool FaviconIsValid() const override;
   GURL GetActiveURL() override;
 
  protected:
   ContentFaviconDriver(content::WebContents* web_contents,
                        FaviconService* favicon_service,
-                       history::HistoryService* history_service);
+                       history::HistoryService* history_service,
+                       bookmarks::BookmarkModel* bookmark_model);
   ~ContentFaviconDriver() override;
 
  private:
   friend class content::WebContentsUserData<ContentFaviconDriver>;
 
   // FaviconHandler::Delegate implementation.
   int DownloadImage(const GURL& url,
                     int max_image_size,
                     ImageDownloadCallback callback) override;
   bool IsOffTheRecord() override;
@@ skipping 13 matching lines @@
 
   GURL bypass_cache_page_url_;
   std::vector<content::FaviconURL> favicon_urls_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentFaviconDriver);
 };
 
 }  // namespace favicon
 
 #endif  // COMPONENTS_FAVICON_CONTENT_CONTENT_FAVICON_DRIVER_H_