Eliminate "temporary" and "uninitialized" isolated worlds

LayoutTests/http/tests/misc/execute-and-return-value.html

Index: LayoutTests/http/tests/misc/execute-and-return-value.html
diff --git a/LayoutTests/http/tests/misc/execute-and-return-value.html b/LayoutTests/http/tests/misc/execute-and-return-value.html
index 4e306bbf0dfb5e5c24996b6facfacaab284a45ad..e8b459301d36ec4e2d5330c818d58b3cbb38c70f 100644
--- a/LayoutTests/http/tests/misc/execute-and-return-value.html
+++ b/LayoutTests/http/tests/misc/execute-and-return-value.html
@@ -5,23 +5,23 @@
 if (window.testRunner) {
   testRunner.dumpAsText();
 
-  var intTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(0, "5");
+  var intTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(1, "5");
   document.body.appendChild(document.createTextNode('Expecting 5: ' + intTest));
   document.body.appendChild(document.createElement('br'));
 
-  var doubleTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(0, "3.14");
+  var doubleTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(1, "3.14");
   document.body.appendChild(document.createTextNode('Expecting 3.14: ' + doubleTest));
   document.body.appendChild(document.createElement('br'));
 
-  var stringTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(0, '"The quick brown dog."');
+  var stringTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(1, '"The quick brown dog."');
   document.body.appendChild(document.createTextNode('Expecting "The quick brown dog.": ' + stringTest));
   document.body.appendChild(document.createElement('br'));
 
-  var booleanTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(0, "!true");
+  var booleanTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(1, "!true");
   document.body.appendChild(document.createTextNode('Expecting false: ' + booleanTest));
   document.body.appendChild(document.createElement('br'));
 
-  var nullTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(0, "null");
+  var nullTest = testRunner.evaluateScriptInIsolatedWorldAndReturnValue(1, "null");
   document.body.appendChild(document.createTextNode('Expecting null: ' + nullTest));
   document.body.appendChild(document.createElement('br'));
 }