Add gallery tests to rotate an image.

chrome/test/data/extensions/api_test/file_manager_browsertest/gallery/photo_editor.js

Index: chrome/test/data/extensions/api_test/file_manager_browsertest/gallery/photo_editor.js
diff --git a/chrome/test/data/extensions/api_test/file_manager_browsertest/gallery/photo_editor.js b/chrome/test/data/extensions/api_test/file_manager_browsertest/gallery/photo_editor.js
new file mode 100644
index 0000000000000000000000000000000000000000..b806d4b198b05814bfc6fd97e89a973892c3b363
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/file_manager_browsertest/gallery/photo_editor.js
@@ -0,0 +1,92 @@
+// Copyright 2014 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.
+
+'use strict';
+
+/**
+ * Prepares the photo editor.
+ *
+ * @param {string} testVolumeName Test volume name passed to the addEntries
+ *     function. Either 'drive' or 'local'.
+ * @param {VolumeManagerCommon.VolumeType} volumeType Volume type.
+ * @return {Promise} Promise to be fulfilled with on success.
+ */
+function setupPhotoEditor(testVolumeName, volumeType) {
+  // Lauch the gallery.
+  var launchedPromise = launchWithTestEntries(
+      testVolumeName,
+      volumeType,
+      [ENTRIES.desktop]);
+  return launchedPromise.then(function(args) {
+    var appWindow = args.appWindow;
+
+    // Show the slide image.
+    var slideImagePromise = waitForSlideImage(
+        appWindow.contentWindow.document,
+        800,
+        600,
+        'My Desktop Background');
+
+    // Lauch the photo editor.
+    var photoEditorPromise = slideImagePromise.then(function() {
+      return waitAndClickElement(
+          appWindow, 'button.edit');
+    });
+
+    return photoEditorPromise.then(function() {
+      return args;
+    });
+  });
+}
+
+/**
+ * Tests to rotate an image.
+ *
+ * @param {string} testVolumeName Test volume name passed to the addEntries
+ *     function. Either 'drive' or 'local'.
+ * @param {VolumeManagerCommon.VolumeType} volumeType Volume type.
+ * @return {Promise} Promise to be fulfilled with on success.
+ */
+function rotateImage(testVolumeName, volumeType) {
+  var launchedPromise = setupPhotoEditor(testVolumeName, volumeType);
+  return launchedPromise.then(function(args) {
+    var appWindow = args.appWindow;
+    return waitAndClickElement(
+        appWindow, '.gallery:not([locked]) button.rotate_right').
+        then(function() {
+          return waitForSlideImage(
+              appWindow.contentWindow.document,
+              600,
+              800,
+              'My Desktop Background');
+        }).
+        then(function() {
+          return waitAndClickElement(
+              appWindow, '.gallery:not([locked]) button.rotate_left');
+        }).
+        then(function() {
+          return waitForSlideImage(
+              appWindow.contentWindow.document,
+              800,
+              600,
+              'My Desktop Background');
+        });
+  });
+}
+
+/**
+ * The rotateImage test for Downloads.
+ * @return {Promise} Promise to be fulfilled with on success.
+ */
+function rotateImageOnDownloads() {
+  return rotateImage('local', VolumeManagerCommon.VolumeType.DOWNLOADS);
+}
+
+/**
+ * The rotateImage test for Google Drive.
+ * @return {Promise} Promise to be fulfilled with on success.
+ */
+function rotateImageOnDrive() {
+  return rotateImage('drive', VolumeManagerCommon.VolumeType.DRIVE);
+}