Whitelist new Highlights App

Whitelist the new Highlights app for chromeosInfoPrivate and public
sessions.

There are two versions of this app.

Bug: 841089
Change-Id: Ie893d5f697c4cca36a5d7ca7427419eb4d3e8b2a
Reviewed-on: https://chromium-review.googlesource.com/1152291Reviewed-by: Toni Barzic <tbarzic@chromium.org>
Reviewed-by: Ivan Šandrk <isandrk@chromium.org>
Commit-Queue: Michael Giuffrida <michaelpg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582032}

chrome/common/extensions/api/_permission_features.json

@@ -157,7 +157,9 @@
       "0136FCB13DB29FD5CD442F56E59E53B61F1DF96F",  // http://crbug.com/642141
       "9834387FDA1F66A1B5CA06CB442137B556F12F2A",  // http://crbug.com/772346
       "930F7D9989A5FBCDCCD7D85BB5C3B7006C24D91D",  // http://crbug.com/782139
-      "A9A9FC0228ADF541F0334F22BEFB8F9C245B21D7"   // http://crbug.com/839189
+      "A9A9FC0228ADF541F0334F22BEFB8F9C245B21D7",  // http://crbug.com/839189
+      "46578A13607D38F1DC8E280C4F499FB0A2F9565C",  // http://crbug.com/841089
+      "898FB5A39687D210766B8998BA4530B99C9E6586"   // http://crbug.com/841089
     ]
   },
   "clipboardRead": {

extensions/browser/device_local_account_util.cc

@@ -98,6 +98,10 @@ const char* const kPublicSessionWhitelist[] = {
     "pjckdjlmdcofkkkocnmhcbehkiapalho",  // Wunderlist demo
     "pbdihpaifchmclcmkfdgffnnpfbobefh",  // YouTube demo
 
+    // New demo mode:
+    "lpmakjfjcconjeehbidjclhdlpjmfjjj",  // Highlights app
+    "iggildboghmjpbjcpmobahnkmoefkike",  // Highlights app
+
     // Testing extensions:
     "ongnjlefhnoajpbodoldndkbkdgfomlp",  // Show Managed Storage
     "ilnpadgckeacioehlommkaafedibdeob",  // Enterprise DeviceAttributes