[MD Settings] Add title to show/hide password button.

chrome/browser/resources/settings/passwords_and_forms_page/password_edit_dialog.js

Index: chrome/browser/resources/settings/passwords_and_forms_page/password_edit_dialog.js
diff --git a/chrome/browser/resources/settings/passwords_and_forms_page/password_edit_dialog.js b/chrome/browser/resources/settings/passwords_and_forms_page/password_edit_dialog.js
index b2b55bb5d5b3d89e2d12164f3a948984c63fe412..c66e29d2eac40732ae07b38635d152fc3235edcd 100644
--- a/chrome/browser/resources/settings/passwords_and_forms_page/password_edit_dialog.js
+++ b/chrome/browser/resources/settings/passwords_and_forms_page/password_edit_dialog.js
@@ -13,6 +13,8 @@
 Polymer({
   is: 'password-edit-dialog',
 
+  behaviors: [I18nBehavior],

[dschuyler, 2017/02/15 20:12:15]

With $i18nPolymer this behavior can be removed.

[hcarmona, 2017/02/15 21:52:11]

Done.

+
   properties: {
     /**
      * The password that is being displayed.
@@ -46,6 +48,15 @@ Polymer({
   },
 
   /**
+   * Gets the title text for the show/hide icon.
+   * @param {string} password
+   * @private
+   */
+  showPasswordTitle_: function(password) {
+    return password ? this.i18n('hidePassword') : this.i18n('showPassword');

[dschuyler, 2017/02/15 20:12:15]

With $i18nPolymer this could become:
showPasswordTitle_: function(password, hide, show) {
  return password ? hide : show;

[hcarmona, 2017/02/15 21:52:11]

Sweet. Done.

+  },
+
+  /**
    * Gets the text of the password. Will use the value of |password| unless it
    * cannot be shown, in which case it will be spaces.
    * @param {!chrome.passwordsPrivate.PasswordUiEntry} item