Chromecast: wires up renderer-side CMA message filter.

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 c559f620314ba72957fd228cc053d40f6217a4ae..6f9c67c84624b5712dbddd483aedb95f752ee677 100644
--- a/chromecast/renderer/cast_content_renderer_client.cc
+++ b/chromecast/renderer/cast_content_renderer_client.cc
@@ -10,6 +10,7 @@
 #include "base/memory/memory_pressure_listener.h"
 #include "chromecast/common/chromecast_switches.h"
 #include "chromecast/renderer/cast_media_load_deferrer.h"
+#include "chromecast/renderer/cast_render_process_observer.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"
@@ -50,6 +51,8 @@ void CastContentRendererClient::RenderThreadStarted() {
     crypto::InitNSSSafely();
 #endif
 
+  cast_observer_.reset(new CastRenderProcessObserver());
+
   prescient_networking_dispatcher_.reset(
       new dns_prefetch::PrescientNetworkingDispatcher());
 }