Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

modules/serviceworkers/WindowClient.idl

Index: modules/serviceworkers/WindowClient.idl
diff --git a/modules/serviceworkers/WindowClient.idl b/modules/serviceworkers/WindowClient.idl
index 3af859b12a83640eac243b5cd89dabe784ccf3f2..36394082febcf4d9af2aaf9e889690932c622ff8 100644
--- a/modules/serviceworkers/WindowClient.idl
+++ b/modules/serviceworkers/WindowClient.idl
@@ -15,10 +15,10 @@ enum ContextFrameType {
     Exposed=ServiceWorker,
     RuntimeEnabled=ServiceWorkerClientAttributes,
     GarbageCollected,
-    TypeChecking=Interface,
     ImplementedAs=ServiceWorkerWindowClient,
 ] interface WindowClient : Client {
     readonly attribute VisibilityState visibilityState;
     readonly attribute boolean focused;
     [CallWith=ScriptState] Promise<WindowClient> focus();
+    [RuntimeEnabled=ServiceWorkerWindowClientNavigate, CallWith=ScriptState] Promise<WindowClient> navigate(USVString url);
 };