Chromecast: communicate HDMI-sink codec changes over IPC.

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 1bb093027a5d985a3bdd9dd4f173cff722f528a6..b249cbc474add440616cb87f105cdd2f3821d7ed 100644
--- a/chromecast/renderer/cast_content_renderer_client.cc
+++ b/chromecast/renderer/cast_content_renderer_client.cc
@@ -8,8 +8,10 @@
 
 #include "base/command_line.h"
 #include "base/memory/memory_pressure_listener.h"
+#include "base/strings/string_number_conversions.h"
 #include "chromecast/common/chromecast_switches.h"
 #include "chromecast/crash/cast_crash_keys.h"
+#include "chromecast/media/base/media_caps.h"
 #include "chromecast/renderer/cast_media_load_deferrer.h"
 #include "chromecast/renderer/cast_render_process_observer.h"
 #include "chromecast/renderer/key_systems_cast.h"
@@ -107,6 +109,16 @@ void CastContentRendererClient::RenderThreadStarted() {
   PlatformPollFreemem();
 #endif
 
+  // Set the initial known codecs mask.
+  if (command_line->HasSwitch(switches::kHdmiSinkSupportedCodecs)) {
+    int hdmi_codecs_mask;
+    if (base::StringToInt(command_line->GetSwitchValueASCII(
+            switches::kHdmiSinkSupportedCodecs),
+        &hdmi_codecs_mask)) {
+      ::media::SetHdmiSinkCodecs(hdmi_codecs_mask);
+    }
+  }
+
   cast_observer_.reset(
       new CastRenderProcessObserver(PlatformGetRendererMessageFilters()));