Add checkbox to allow auto signing in with a saved password.

chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.html

Index: chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.html
diff --git a/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.html b/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.html
index 59abdc9b0149559419fa2fe7cdf8165aaafc3697..6c293042cd15fa47afc93c1d414df4c15db5170e 100644
--- a/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.html
+++ b/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.html
@@ -6,6 +6,7 @@
 <link rel="import" href="chrome://resources/cr_elements/cr_shared_menu/cr_shared_menu.html">
 <link rel="import" href="/passwords_and_forms_page/password_edit_dialog.html">
 <link rel="import" href="/passwords_and_forms_page/passwords_shared_css.html">
+<link rel="import" href="/prefs/prefs.html">
 <link rel="import" href="/settings_shared_css.html">
 
 <dom-module id="passwords-section">
@@ -25,6 +26,10 @@
         width: 0;
       }
 
+      #autosigninCheckbox {
+        margin-bottom: 24px;
+      }
+
       .website-column {
         flex: 3;
       }
@@ -49,6 +54,11 @@
         @apply(--settings-actionable);
       }
     </style>
+    <settings-checkbox id="autosigninCheckbox"
+        pref="{{prefs.credentials_enable_autosignin}}"
+        label="$i18n{passwordsAutosigninLabel}"
+        sub-label="$i18n{passwordsAutosigninDescription}">
+    </settings-checkbox>
     <div id="manageLink">$i18nRaw{managePasswordsLabel}</div>
     <div class="heading">$i18n{savedPasswordsHeading}</div>
     <div class="item-list">