Describe LiveEdit changes and support preview mode

test/mjsunit/debug-liveedit-newsource.js

Index: test/mjsunit/debug-liveedit-newsource.js
diff --git a/test/mjsunit/debug-liveedit-newsource.js b/test/mjsunit/debug-liveedit-newsource.js
index db256a48fe41a72a30d3ce9084d3734481d93073..7b8945a7056fec2ba2bfd3615fd95575c3d04154 100644
--- a/test/mjsunit/debug-liveedit-newsource.js
+++ b/test/mjsunit/debug-liveedit-newsource.js
@@ -57,7 +57,8 @@ var new_source = new_source.replace("17", "18");
 print("new source: " + new_source);
 
 var change_log = new Array();
-Debug.LiveEdit.SetScriptSource(script, new_source, change_log);
+var result = Debug.LiveEdit.SetScriptSource(script, new_source, false, change_log);
+print("Result: " + JSON.stringify(result) + "\n");
 print("Change log: " + JSON.stringify(change_log) + "\n");
 
 assertEquals("Capybara", ChooseAnimal());