Deprecate FileError in FileAPI

LayoutTests/fast/filesystem/resources/simple-required-arguments-getdirectory.js

 if (this.importScripts) {
     importScripts('../resources/fs-worker-common.js');
     importScripts('../../js/resources/js-test-pre.js');
     importScripts('../resources/fs-test-util.js');
 }
 
 description("DirectoryEntry required arguments test.");
 
 var fileSystem = null;
 
 function errorCallback(error) {
-    debug("Error occured while requesting a TEMPORARY file system:" + error.code);
+    debug("Error occured while requesting a TEMPORARY file system:" + error.name);
     finishJSTest();
 }
 
 function successCallback(fs) {
     fileSystem = fs;
     debug("Successfully obtained TEMPORARY FileSystem:" + fileSystem.name);
     root = evalAndLog("root = fileSystem.root");
     shouldThrow("root.getDirectory()");
     finishJSTest();
 }
 
 var jsTestIsAsync = true;
 evalAndLog("webkitRequestFileSystem(TEMPORARY, 100, successCallback, errorCallback);");
 var successfullyParsed = true;