Add an 'author' field to the manifest definition.

Review URL: https://chromiumcodereview.appspot.com/10834193

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150827 0039d316-1c4b-4281-b951-d872f2087c98

chrome/common/extensions/api/_manifest_features.json

@@ -22,6 +22,10 @@
     // via the manifest.
     "extension_types": ["packaged_app", "hosted_app"]
   },
+  "author": {
+    "channel": "stable",
+    "extension_types": "all"
+  },
   "background": {
     "channel": "stable",
     "extension_types": [