Merge "Cleanup passing emails for Web Links API."

     * <p>Providers are required to show confirmation UI for all new permissions granted

     * for the linked document.

     *

     * <p>If list of recipients is known, then it can be passed in options as

     * {@link Intent#EXTRA_EMAIL} as either a string or list of strings. Note, that

     * <p>If list of recipients is known, then it should be passed in options as

     * {@link Intent#EXTRA_EMAIL} as a list of email addresses. Note, that

     * this is just a hint for the provider, which can ignore the list. In either

     * case the provider is required to show a UI for letting the user confirm

     * any new permission grants.

     *

     * <p>Note, that the entire <code>options</code> bundle is send to the provider.

     * Make sure that you trust the provider before passing any sensitive information.

     * <p>Note, that the entire <code>options</code> bundle will be sent to the provider

     * backing the passed <code>uri</code>. Make sure that you trust the provider

     * before passing any sensitive information.

     *

     * <p>Since this API may show a UI, it cannot be called from background.

     *