Implementation (cc file) for background loader contents.

components/offline_pages/content/background_loader/background_loader_contents.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_CONTENT_BACKGROUND_LOADER_BACKGROUND_LOADER_CONTENTS_H_
 #define COMPONENTS_OFFLINE_PAGES_CONTENT_BACKGROUND_LOADER_BACKGROUND_LOADER_CONTENTS_H_
 
 #include <string>
 
-#include "base/callback.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "url/gurl.h"
 
 namespace content {
 class WebContents;
+class BrowserContext;
 }
 
 namespace background_loader {
 
 // This class maintains a WebContents used in the background. It can host
 // a renderer but does not have any visible display.
 class BackgroundLoaderContents : public content::WebContentsDelegate {
  public:
   // Creates BackgroundLoaderContents with specified |browser_context|. Uses
   // default session storage space.
@@ skipping 41 matching lines @@
 
   void RequestMediaAccessPermission(
       content::WebContents* contents,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) override;
   bool CheckMediaAccessPermission(content::WebContents* contents,
                                   const GURL& security_origin,
                                   content::MediaStreamType type) override;
 
  private:
+  friend class BackgroundLoaderContentsTest;
+  BackgroundLoaderContents();
+
   std::unique_ptr<content::WebContents> web_contents_;
   content::BrowserContext* browser_context_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundLoaderContents);
 };
 
 }  // namespace background_loader
 #endif  // COMPONENTS_OFFLINE_PAGES_CONTENT_BACKGROUND_LOADER_BACKGROUND_LOADER_CONTENTS_H_