Replace EntryArraySync type by an EntrySync[]

LayoutTests/fast/filesystem/resources/sync-operations.js

 if (this.importScripts) {
     importScripts('../resources/fs-worker-common.js');
     importScripts('../../js/resources/js-test-pre.js');
     importScripts('../resources/fs-test-util.js');
 }
 
 description("Test making multiple synchronous FileSystem operations.");
 
 var fileSystem = webkitRequestFileSystemSync(this.TEMPORARY, 100);
 removeAllInDirectorySync(fileSystem.root);
 
 // Stage 1 (prepare)
 var a = fileSystem.root.getFile('a', {create:true});
 var b = fileSystem.root.getDirectory('b', {create:true});
 var c = fileSystem.root.getDirectory('c', {create:true});
 var d = fileSystem.root.getFile('d', {create:true});
 
 // Stage 2 (test)
 var a_copy = a.copyTo(b, 'tmp');
 var metadata = a.getMetadata();
 var b_parent = b.getParent();
 var c_copy = c.copyTo(fileSystem.root, 'f');
 var d_new = d.moveTo(fileSystem.root, 'd2');
 var e = fileSystem.root.getFile('e', {create:true});
 
 // Verify
 var reader = fileSystem.root.createReader();
 var dirsCount = 0;
 var paths = [];
+var entries;
 do {
-    var entries = reader.readEntries();
+    entries = reader.readEntries();
+    shouldBe('entries.__proto__', 'Array.prototype');
     for (var i = 0; i < entries.length; ++i) {
         paths.push(entries[i].fullPath);
         if (entries[i].isDirectory)
             dirsCount++;
     }
 } while (entries.length);
 
 paths.sort();
 shouldBe('"' + paths.join(',') + '"', '"/a,/b,/c,/d2,/e,/f"');
 shouldBe("dirsCount", "3");
 removeAllInDirectorySync(fileSystem.root);
 finishJSTest();