Add chrome.runtime.getPackageDirectoryEntry.

chrome/test/data/extensions/api_test/runtime/get_package_directory/app/window/test.js

Index: chrome/test/data/extensions/api_test/runtime/get_package_directory/app/window/test.js
diff --git a/chrome/test/data/extensions/api_test/runtime/get_package_directory/app/window/test.js b/chrome/test/data/extensions/api_test/runtime/get_package_directory/app/window/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..b1c741e157a5779b4246b8a55322b8e800a1f5cf
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/runtime/get_package_directory/app/window/test.js
@@ -0,0 +1,56 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+expectedDirectoryEntries = {
+  'background.js': true,
+  'manifest.json': true,
+  'window': {
+    'test.html': true,
+    'test.js': true
+  }
+};
+
+function checkTree(root, expectedEntries) {
+  var directoryReader = root.createReader();
+  var contents = [];
+  directoryReader.readEntries(chrome.test.callbackPass(
+      function readEntriesCallback(entries) {
+    if (entries.length == 0) {
+      chrome.test.assertEq(Object.keys(expectedEntries).length, 0);
+    } else {
+      for (var i = 0; i < entries.length; i++) {
+        // Ignore files or directories like .svn.
+        if (entries[i].name[0] == '.')
+          continue;
+        chrome.test.assertTrue(expectedEntries[entries[i].name] != null);
+        if (entries[i].isDirectory) {
+          chrome.test.assertEq(typeof expectedEntries[entries[i].name],
+                               'object');
+          checkTree(entries[i], expectedEntries[entries[i].name]);
+        } else {
+          chrome.test.assertEq(expectedEntries[entries[i].name], true);
+          chrome.fileSystem.isWritableEntry(
+              entries[i], chrome.test.callbackPass(function(isWritable) {
+            chrome.test.assertFalse(isWritable);
+          }));
+          chrome.fileSystem.getWritableEntry(
+              entries[i], chrome.test.callbackFail(
+                  'Cannot write to file in a restricted location'));
+        }
+        delete expectedEntries[entries[i].name];
+      }
+      directoryReader.readEntries(chrome.test.callbackPass(
+          readEntriesCallback));
+    }
+  }));
+}
+
+chrome.test.runTests([
+  function getPackageDirectoryEntry() {
+    chrome.runtime.getPackageDirectoryEntry(chrome.test.callbackPass(
+        function(directoryEntry) {
+      checkTree(directoryEntry, expectedDirectoryEntries);
+    }));
+  }
+]);