[cros] Add attribution (author & website) strings to stock user images.

chrome/browser/resources/options2/chromeos/change_picture_options.js

Index: chrome/browser/resources/options2/chromeos/change_picture_options.js
diff --git a/chrome/browser/resources/options2/chromeos/change_picture_options.js b/chrome/browser/resources/options2/chromeos/change_picture_options.js
index 66c302113f239a6d45b3f8f0c6871ad6b8c7155b..2404337c9164c0ca999becb51878f2fa89ade3d0 100644
--- a/chrome/browser/resources/options2/chromeos/change_picture_options.js
+++ b/chrome/browser/resources/options2/chromeos/change_picture_options.js
@@ -240,13 +240,14 @@ cr.define('options', function() {
 
     /**
      * Appends default images to the image grid. Should only be called once.
-     * @param {Array.<string>} images An array of URLs to default images.
+     * @param {Array.<{url: string, author: string, website: string}>} images
+     *   An array of default images data, including URL, author and website.
      * @private
      */
     setDefaultImages_: function(images) {
       var imageGrid = $('user-image-grid');
-      for (var i = 0, url; url = images[i]; i++) {
-        imageGrid.addItem(url);
+      for (var i = 0, data; data = imagesData[i]; i++) {
+        imageGrid.addItem(data.url);
       }
     },
   };
@@ -389,6 +390,13 @@ cr.define('options', function() {
           url != ButtonImages.TAKE_PHOTO && url != ButtonImages.CHOOSE_FILE) {
         chrome.send('selectImage', [url]);
       }
+      // Update image attribution text.
+      var image = imageGrid.selectedItem;
+      $('user-image-author-name').textContent = image.author;
+      $('user-image-author-website').textContent = image.website;
+      $('user-image-author-website').href = image.website;
+      $('user-image-attribution').style.visibility =
+          (image.author || image.website) ? 'visible' : 'hidden';
     },
 
     /**
@@ -461,13 +469,17 @@ cr.define('options', function() {
 
     /**
      * Appends default images to the image grid. Should only be called once.
-     * @param {Array.<string>} images An array of URLs to default images.
+     * @param {Array.<{url: string, author: string, website: string}>} images
+     *   An array of default images data, including URL, author and website.
      * @private
      */
-    setDefaultImages_: function(images) {
+    setDefaultImages_: function(imagesData) {
       var imageGrid = $('user-image-grid');
-      for (var i = 0, url; url = images[i]; i++) {
-        imageGrid.addItem(url).type = 'default';
+      for (var i = 0, data; data = imagesData[i]; i++) {
+        var item = imageGrid.addItem(data.url);
+        item.type = 'default';
+        item.author = data.author || '';
+        item.website = data.website || '';
       }
     },
   };