Add a <viewer-password-screen> element.

This element displays a password entry screen to collect a password from the
user. It fires a 'password' event when a password is entered. It exposes
accept() and deny() methods which can be called to indicate the password
was accepted or denied. It also exposes an 'active' attribute which specifies
whether or not the password screen is visible.

BUG=303491
R=ganetsky@chromium.org

Review URL: https://codereview.chromium.org/169403008
2 files changed
tree: 4fb872558e3c4945d288aab90a4107d087253d88
  1. elements/
  2. codereview.settings
  3. OWNERS