Enable passing cast channel certificate authority keys.

extensions/common/api/cast_channel.idl

Index: extensions/common/api/cast_channel.idl
diff --git a/extensions/common/api/cast_channel.idl b/extensions/common/api/cast_channel.idl
index 3d2f7d827dda5d773fbff57a70df97b9c87e1473..04ae1c0dcf6ce6ce0add1e3e703086273cfcc0ea 100644
--- a/extensions/common/api/cast_channel.idl
+++ b/extensions/common/api/cast_channel.idl
@@ -157,7 +157,10 @@ namespace cast.channel {
   // See extensions/browser/api/cast_channel/logging.proto for definition.
   // Compression is in gzip format.
   callback GetLogsCallback = void (ArrayBuffer log);
-  
+
+  // Callback from <code>setAuthorityKeys</code> method.
+  callback SetAuthorityKeysCallback = void (DOMString result);
+
   interface Functions {
     // Opens a new channel to the Cast receiver specified by connectInfo.  Only
     // one channel may be connected to same receiver from the same extension at
@@ -194,6 +197,13 @@ namespace cast.channel {
     // |callback|: If successful, |callback| is invoked with data. Otherwise,
     // an error will be raised.                
     static void getLogs(GetLogsCallback callback);
+
+    // Sets trusted certificate authorities using multiple records in the
+    // following format:
+    // fingerprint (20 bytes), public key size (2 bytes), public key

[Ryan Sleevi, 2014/10/09 21:02:43]

documentation is out of date

+    static void setAuthorityKeys(DOMString signature,
+                                 DOMString keys,
+                                 SetAuthorityKeysCallback callback);
   };
 
   // Events on the channel.