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

modules/fetch/Response.idl

Index: modules/fetch/Response.idl
diff --git a/modules/fetch/Response.idl b/modules/fetch/Response.idl
index 5deaa680f4f3581a332d87b9d1cd9fb41f05f978..cd8a275e7e88674b174419930126c1e34b5af5e4 100644
--- a/modules/fetch/Response.idl
+++ b/modules/fetch/Response.idl
@@ -4,19 +4,17 @@
 
 // http://fetch.spec.whatwg.org/#response-class
 
-enum ResponseType { "basic", "cors", "default", "error", "opaque" };
-
-// FIXME: Add union type: URLSearchParams
-typedef (Blob or ArrayBuffer or ArrayBufferView or FormData or USVString) BodyInit;
+enum ResponseType { "basic", "cors", "default", "error", "opaque", "opaqueredirect" };
 
 [
-    Constructor(optional BodyInit body, optional Dictionary responseInitDict),
-    ConstructorCallWith=ExecutionContext,
+    // TODO(yhirano): We use "any" for body because the IDL processor doesn't
+    // recognize ReadableStream implemented with V8 extras. Fix it.
+    Constructor(optional any body, optional Dictionary responseInitDict),
+    ConstructorCallWith=ScriptState,
     Exposed=(Window,Worker),
     RaisesException=Constructor,
-    ActiveDOMObject,
+    DependentLifetime,
     GarbageCollected,
-    TypeChecking=Interface,
 ] interface Response {
     [CallWith=ExecutionContext] static Response error();
     [CallWith=ExecutionContext, RaisesException] static Response redirect(USVString url, optional unsigned short status = 302);
@@ -29,7 +27,7 @@ typedef (Blob or ArrayBuffer or ArrayBufferView or FormData or USVString) BodyIn
 
     [RaisesException] Response clone();
 
-    readonly attribute ReadableByteStream body;
+    [ImplementedAs=bodyWithUseCounter] readonly attribute ReadableByteStream body;
 };
 
 Response implements Body;