Allow hw secured codecs on chromecast

content/public/common/renderer_preferences.h

Index: content/public/common/renderer_preferences.h
diff --git a/content/public/common/renderer_preferences.h b/content/public/common/renderer_preferences.h
index 73d215a6731caa2cb2f94126ddc9879b3a2b3121..2eb0ea05633a9738240f6eee4f3ad4fc338b2c36 100644
--- a/content/public/common/renderer_preferences.h
+++ b/content/public/common/renderer_preferences.h
@@ -135,6 +135,10 @@ struct CONTENT_EXPORT RendererPreferences {
   // encrypted video.  Currently only used by Android.
   bool use_view_overlay_for_all_video;
 
+  // Whether hardware secure codec is supported or not. On Android, this is
+  // implied by use_video_overlay_for_embedded_encrypted_video.
+  bool hw_secure_codec_allowed;

[ddorwin, 2016/05/27 21:33:00]

I don't think we should be adding members to this, especially for something that
is not runtime-configurable as is the case for Cast.

Do you even need this now that you have different max robustness levels?

AFAICT, all this does is cause HW_SECURE_CODECS_NOT_ALLOWED to not be added as a
rule. But that only matters if a HW_SECURE_CODECS_REQUIRED rule is added.

So, while not strictly correct (as is the case on other non-Android platforms),
there might be a much simpler way to address this that doesn't involve
addressing the general problem.

+
   // Country iso of the mobile network for content detection purpose.
   std::string network_contry_iso;