Sky should expose services provided to/by embedder

sky/framework/inspector/inspector.sky

 <import src="/gen/mojo/public/interfaces/application/shell.mojom.sky" as="shellMojom" />
 <import src="/gen/mojo/public/sky/connection.sky" as="connection" />
 <import src="/gen/mojo/public/sky/core.sky" as="core" />
 <import src="/gen/mojo/public/sky/support.sky" as="support" />
 <import src="/gen/mojo/services/public/sky/shell.sky" as="shell" />
 <import src="/gen/sky/services/inspector/inspector.mojom.sky" as="inspector" />
 <import src="console-agent.sky" as="ConsoleAgent" />
 <import src="css-agent.sky" as="CSSAgent" />
 <import src="dom-agent.sky" as="DOMAgent" />
 <import src="indexeddb-agent.sky" as="IndexedDBAgent" />
@@ skipping 100 matching lines @@
   sendMessage(method, params) {
     var message = JSON.stringify({
       method: method,
       params: params,
     });
     window.frontend.sendMessage(message);
   }
 }
 
 (function() {
-  var shellHandle = internals.passShellProxyHandle();
+  var shellHandle = internals.takeShellProxyHandle();
   var shellProxy = connection.bindHandleToProxy(shellHandle, shellMojom.Shell);
   var myShell = new shell.Shell(shellProxy)
   var tracingApp = myShell.connectToApplication("mojo:sky_inspector_server");
   tracingApp.provideService(inspector.InspectorBackend, InspectorBackend);
 
   window.frontend = tracingApp.requestService(inspector.InspectorFrontend);
 })();
 </script>