1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_RENDERER_PRERENDER_PRERENDER_MEDIA_LOAD_DEFERRER_H_ 6 #define CHROME_RENDERER_PRERENDER_PRERENDER_MEDIA_LOAD_DEFERRER_H_ 7 8 #include "base/callback.h" 9 #include "content/public/renderer/render_frame_observer.h" 10 11 namespace prerender { 12 13 // Defers media player loading in prerendered pages until the prerendered page 14 // is swapped in. 15 class PrerenderMediaLoadDeferrer : public content::RenderFrameObserver { 16 public: 17 // Will run |closure| to continue loading the media resource once the page is 18 // swapped in. 19 PrerenderMediaLoadDeferrer(content::RenderFrame* render_frame, 20 const base::Closure& closure); 21 virtual ~PrerenderMediaLoadDeferrer(); 22 23 private: 24 // RenderFrameObserver method: 25 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 26 27 void OnSetIsPrerendering(bool is_prerendering); 28 29 bool is_prerendering_; 30 base::Closure continue_loading_cb_; 31 32 DISALLOW_COPY_AND_ASSIGN(PrerenderMediaLoadDeferrer); 33 }; 34 35 } // namespace prerender 36 37 #endif // CHROME_RENDERER_PRERENDER_PRERENDER_MEDIA_LOAD_DEFERRER_H_ 38