Support png wallpapers

chrome/test/data/extensions/api_test/wallpaper_manager/test.js

Index: chrome/test/data/extensions/api_test/wallpaper_manager/test.js
diff --git a/chrome/test/data/extensions/api_test/wallpaper_manager/test.js b/chrome/test/data/extensions/api_test/wallpaper_manager/test.js
index 99385bcfdb9cf58cf6e8f87be2ea431fddce258d..c274617cf4717a8063e26622319434c7d4431a64 100644
--- a/chrome/test/data/extensions/api_test/wallpaper_manager/test.js
+++ b/chrome/test/data/extensions/api_test/wallpaper_manager/test.js
@@ -9,7 +9,8 @@ var pass = chrome.test.callbackPass;
 var fail = chrome.test.callbackFail;
 
 chrome.test.getConfig(function(config) {
-  var wallpaper;
+  var wallpaperJpeg;
+  var wallpaperPng;
   var wallpaperStrings;
   var requestImage = function(url, onLoadCallback) {
     var wallpaperRequest = new XMLHttpRequest();
@@ -37,8 +38,8 @@ chrome.test.getConfig(function(config) {
       url = url.replace(/PORT/, config.testServer.port);
       requestImage(url, function(requestStatus, response) {
         if (requestStatus === 200) {
-          wallpaper = response;
-          chrome.wallpaperPrivate.setWallpaper(wallpaper,
+          wallpaperJpeg = response;
+          chrome.wallpaperPrivate.setWallpaper(wallpaperJpeg,
                                                'CENTER_CROPPED',
                                                url,
                                                pass(function() {
@@ -51,7 +52,7 @@ chrome.test.getConfig(function(config) {
       });
     },
     function setCustomJpegWallpaper() {
-      chrome.wallpaperPrivate.setCustomWallpaper(wallpaper,
+      chrome.wallpaperPrivate.setCustomWallpaper(wallpaperJpeg,
                                                  'CENTER_CROPPED',
                                                  true,
                                                  '123',
@@ -62,15 +63,28 @@ chrome.test.getConfig(function(config) {
         }));
       }));
     },
-    function getCustomWallpaperThumbnail() {
-      chrome.wallpaperPrivate.getOfflineWallpaperList('CUSTOM',
-                                                      pass(function(lists) {
-        chrome.test.assertEq(1, lists.length);
-        chrome.wallpaperPrivate.getThumbnail(lists[0], 'CUSTOM',
-                                             pass(function(data) {
-          chrome.test.assertNoLastError();
-        }));
-      }));
+    function setCustomPngWallpaper() {
+      var url = "http://a.com:PORT/files/extensions/api_test" +
+          "/wallpaper_manager/test.png";
+      url = url.replace(/PORT/, config.testServer.port);
+      requestImage(url, function(requestStatus, response) {
+        if (requestStatus === 200) {
+          wallpaperPng = response;
+          chrome.wallpaperPrivate.setCustomWallpaper(wallpaperPng,
+                                                     'CENTER_CROPPED',
+                                                     true,
+                                                     '123',
+                                                     pass(function(thumbnail) {
+            chrome.wallpaperPrivate.setCustomWallpaperLayout('CENTER',
+                                                             pass(function() {
+              chrome.wallpaperPrivate.setCustomWallpaperLayout('STRETCH',
+                                                               pass());
+            }));
+          }));
+        } else {
+          chrome.test.fail('Failed to load test.png from local server.');
+        }
+      });
     },
     function setCustomJepgBadWallpaper() {
       var url = "http://a.com:PORT/files/extensions/api_test" +
@@ -110,13 +124,14 @@ chrome.test.getConfig(function(config) {
           chrome.test.fail('Thumbnail is not found. getThumbnail should not ' +
                            'return any data.');
         }
-        chrome.wallpaperPrivate.saveThumbnail(url, wallpaper, pass(function() {
+        chrome.wallpaperPrivate.saveThumbnail(url, wallpaperJpeg,
+                                              pass(function() {
           chrome.test.assertNoLastError();
           chrome.wallpaperPrivate.getThumbnail(url, 'ONLINE',
                                                pass(function(data) {
             chrome.test.assertNoLastError();
             // Thumbnail should already be saved to thumbnail directory.
-            chrome.test.assertEq(wallpaper, data);
+            chrome.test.assertEq(wallpaperJpeg, data);
           }));
         }));
       }));
@@ -128,7 +143,7 @@ chrome.test.getConfig(function(config) {
         chrome.test.assertEq('test.jpg', list[0]);
         // Saves the same wallpaper to wallpaper directory but name it as
         // test1.jpg.
-        chrome.wallpaperPrivate.setWallpaper(wallpaper,
+        chrome.wallpaperPrivate.setWallpaper(wallpaperJpeg,
                                              'CENTER_CROPPED',
                                              'http://dummyurl/test1.jpg',
                                              pass(function() {