Added [SecureContext] to the subtle attribute

third_party/WebKit/LayoutTests/external/wpt/WebCryptoAPI/wrapKey_unwrapKey/wrapKey_unwrapKey.https.js

 // Tests for wrapKey and unwrapKey round tripping

[Mike West, 2017/04/24 14:34:05]

Does this need to be renamed? It seems to break the `wrapKey_unwrapKey` tests.

 
 function run_test() {
     var subtle = self.crypto.subtle;
 
     var wrappers = [];  // Things we wrap (and upwrap) keys with
     var keys = [];      // Things to wrap and unwrap
     var ecdhPeerKey;    // ECDH peer public key needed for non-extractable ECDH key comparison
 
     // Generate all the keys needed, then iterate over all combinations
     // to test wrapping and unwrapping.
@@ skipping 495 matching lines @@
         }
 
         return p;
     }
 
     function str2ab(str)        { return Uint8Array.from( str.split(''), function(s){return s.charCodeAt(0)} ); }
     function ab2str(ab)         { return String.fromCharCode.apply(null, new Uint8Array(ab)); }
 
 
 }