Initial skeletal implementation of the PrincipalService. Also, use the Login()/GetUserBlessing()

examples/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 
 group("examples") {
   testonly = true
 
   deps = [
@@ skipping 30 matching lines @@
   if (is_android) {
     deps += [
       "//examples/device_name",
       "//examples/java_android/example_service",
       "//examples/java_android/echo",
     ]
   }
 
   if (defined(go_build_tool) && go_build_tool != "") {
     deps += [ "//examples/go" ]
+    if (is_android) {
+      deps += [ "//examples/bank_app" ]
+    }
   }
 
   if (is_linux) {
     deps += [ "//examples/python" ]
   }
 }