Initial extension bindings for Media Gallery API.

chrome/renderer/resources/extensions/experimental.media_galleries_custom_bindings.js

Index: chrome/renderer/resources/extensions/experimental.media_galleries_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/experimental.media_galleries_custom_bindings.js b/chrome/renderer/resources/extensions/experimental.media_galleries_custom_bindings.js
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+// Copyright (c) 2012 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.
+
+// Custom bindings for the Media Gallery API.
+
+var mediaGalleriesNatives = requireNative('experimental_mediaGalleries');
+var CreateMediaGalleryObject = mediaGalleriesNatives.CreateMediaGalleryObject;
+
+var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+
+chromeHidden.registerCustomHook('experimental.mediaGalleries',
+                                function(bindingsAPI, extensionId) {
+  var apiFunctions = bindingsAPI.apiFunctions;
+
+  apiFunctions.setCustomCallback('getMediaGalleries',
+                                 function(name, request, response) {
+    var result = [];
+    var resp = response ? chromeHidden.JSON.parse(response) : [];
+    for (var i = 0; i < resp.length; i++) {
+      result.push(CreateMediaGalleryObject(resp[i].id, resp[i].name,
+                                           resp[i].flags));
+
+    }
+    if (request.callback)
+      request.callback(result);
+    request.callback = null;
+  });
+});