MD Settings: long dialog body should have overscroll line.

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

Index: chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html
diff --git a/chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html b/chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html
index 085505e394f778d2d5d3ecd046dc7fc50d21661c..7fc866f079b5baac6e5df4d3331e69933abf59e1 100644
--- a/chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html
+++ b/chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html
@@ -1,4 +1,5 @@
 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
+<link rel="import" href="chrome://resources/cr_elements/cr_scrollable_behavior.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/md_select_css.html">
@@ -56,16 +57,19 @@
         -webkit-margin-start: 8px;
       }
 
-      #dialog .body {
-        max-height: 450px;
+      #dialog {
+        --cr-dialog-body-container: {
+          max-height: 450px; 
+        };
       }
 
       @media all and (max-height: 714px) {
-        #dialog .body {
-          max-height: 270px;
+        #dialog {
+          --cr-dialog-body-container: {
+            max-height: 270px; 
+          };
         }
       }
-
       paper-textarea {
         /**
          * Workaround for iron-autogrow-textarea's display:inline-block creating
@@ -76,7 +80,8 @@
         };
       }
     </style>
-    <dialog is="cr-dialog" id="dialog" close-text="$i18n{close}">
+    <dialog is="cr-dialog" id="dialog" close-text="$i18n{close}"
+        show-scroll-borders>
       <div class="title">[[title_]]</div>
       <div class="body">
         <template is="dom-repeat" items="[[addressWrapper_]]">