Support for defered media load to cast_content_render_client.

chromecast/renderer/cast_content_renderer_client.cc

 // Copyright 2014 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.
 
 #include "chromecast/renderer/cast_content_renderer_client.h"
 
 #include <sys/sysinfo.h>
 
 #include "base/command_line.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "chromecast/common/chromecast_switches.h"
+#include "chromecast/renderer/cast_media_load_deferrer.h"
 #include "chromecast/renderer/key_systems_cast.h"
 #include "chromecast/renderer/media/cma_media_renderer_factory.h"
 #include "components/dns_prefetch/renderer/prescient_networking_dispatcher.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_view.h"
 #include "crypto/nss_util.h"
 #include "third_party/WebKit/public/platform/WebColor.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
 #include "third_party/WebKit/public/web/WebView.h"
@@ skipping 60 matching lines @@
   return scoped_ptr<::media::RendererFactory>(
       new chromecast::media::CmaMediaRendererFactory(
           render_frame->GetRoutingID()));
 }
 
 blink::WebPrescientNetworking*
 CastContentRendererClient::GetPrescientNetworking() {
   return prescient_networking_dispatcher_.get();
 }
 
+void CastContentRendererClient::DeferMediaLoad(
+    content::RenderFrame* render_frame,
+    const base::Closure& closure) {
+  if (!render_frame->IsHidden()) {
+    closure.Run();
+    return;
+  }
+
+  // Lifetime is tied to |render_frame| via content::RenderFrameObserver.
+  new CastMediaLoadDeferrer(render_frame, closure);
+}
+
 }  // namespace shell
 }  // namespace chromecast