Initial checkin of accessibility extensions.

ui/accessibility/extensions/longdesc/manifest.json

Index: ui/accessibility/extensions/longdesc/manifest.json
diff --git a/ui/accessibility/extensions/longdesc/manifest.json b/ui/accessibility/extensions/longdesc/manifest.json
new file mode 100644
index 0000000000000000000000000000000000000000..31fbc2166a89f201bc3f183bcc9d63f6ef524340
--- /dev/null
+++ b/ui/accessibility/extensions/longdesc/manifest.json
@@ -0,0 +1,23 @@
+{
+  "name": "An Extension",
+  "version": "0.1",
+  "description": "An extension to modify the context menu when an HTML element contains a aria-describedat and/or longdesc property.",
+  "background": {
+    "scripts": [ "background.js" ]
+  },
+  "content_scripts": [{
+    "matches": ["<all_urls>"],
+    "js": ["lastRightClick.js"]
+  }],
+  "icons": {
+    "16": "icon.png"
+  },
+  "permissions": [
+    "tabs",
+    "contextMenus",
+    "storage",
+    "<all_urls>"
+  ],
+  "manifest_version": 2,
+  "options_page": "options.html"
+}