Content Security Policy: frame-src is deprecated, use child-src instead.

controller/documentcontroller.php

@@ -172,7 +172,7 @@ class DocumentController extends Controller {
 
 		$policy = new ContentSecurityPolicy();
 		$policy->addAllowedScriptDomain('\'self\' http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js http://cdnjs.cloudflare.com/ajax/libs/jquery-mousewheel/3.1.12/jquery.mousewheel.min.js \'unsafe-eval\' ' . $wopiRemote);
-		$policy->addAllowedFrameDomain('\'self\' http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js http://cdnjs.cloudflare.com/ajax/libs/jquery-mousewheel/3.1.12/jquery.mousewheel.min.js \'unsafe-eval\' ' . $wopiRemote);
+		$policy->addAllowedChildSrcDomain('\'self\' http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js http://cdnjs.cloudflare.com/ajax/libs/jquery-mousewheel/3.1.12/jquery.mousewheel.min.js \'unsafe-eval\' ' . $wopiRemote);
 		$policy->addAllowedConnectDomain($webSocket);
 		$policy->addAllowedImageDomain('*');
 		$policy->allowInlineScript(true);