Update WebKit idl files after chrome roll

third_party/WebCore/inspector/InjectedScriptHost.idl

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 31 matching lines @@
     [Custom] DOMObject internalConstructorName(in DOMObject object);
     [Custom] boolean isHTMLAllCollection(in DOMObject object);
     [Custom] DOMString type(in DOMObject object);
     [Custom] DOMObject functionDetails(in DOMObject object);
     [Custom] Array getInternalProperties(in DOMObject object);
     [Custom] Array getEventListeners(in Node node);
 
     [Custom] DOMString databaseId(in DOMObject database);
     [Custom] DOMString storageId(in DOMObject storage);
     [Custom] DOMObject evaluate(in DOMString text);
+    // Only declarative scope (local, with and catch) is accepted. Returns undefined. 
+    [Custom] DOMObject setFunctionVariableValue(in DOMObject functionObject, in int scopeIndex, in DOMString variableName, DOMObject newValue);
 };