Support for defered media load to cast_content_render_client.

chromecast/renderer/cast_content_renderer_client.cc

Index: chromecast/renderer/cast_content_renderer_client.cc
diff --git a/chromecast/renderer/cast_content_renderer_client.cc b/chromecast/renderer/cast_content_renderer_client.cc
index beff1d3a9ea6363a0a0cd899a1deb5d6bac39d53..f10c75baf247f71cc11da49823bb021947ebe884 100644
--- a/chromecast/renderer/cast_content_renderer_client.cc
+++ b/chromecast/renderer/cast_content_renderer_client.cc
@@ -8,9 +8,11 @@
 
 #include "base/command_line.h"
 #include "base/memory/memory_pressure_listener.h"
+#include "chromecast/renderer/cast_media_load_deferrer.h"
 #include "chromecast/renderer/key_systems_cast.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"
@@ -74,5 +76,17 @@ 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