[MD settings] avoid dialog resizing in add exception

chrome/browser/resources/settings/site_settings/add_site_dialog.html

Index: chrome/browser/resources/settings/site_settings/add_site_dialog.html
diff --git a/chrome/browser/resources/settings/site_settings/add_site_dialog.html b/chrome/browser/resources/settings/site_settings/add_site_dialog.html
index 30d34f60aab28cd93ae69d56769e3965cbac700d..4ae0504b35c0c2315967a20e13785d5bf97e565f 100644
--- a/chrome/browser/resources/settings/site_settings/add_site_dialog.html
+++ b/chrome/browser/resources/settings/site_settings/add_site_dialog.html
@@ -15,6 +15,10 @@
         margin-bottom: 2px;
         margin-top: 15px;
       }
+
+      #checkboxContainer {
+        min-height: 33px;  /* To avoid resizing the dialog. */
+      }
     </style>
     <dialog is="cr-dialog" id="dialog" close-text="$i18n{close}">
       <div class="title">$i18n{addSiteTitle}</div>
@@ -23,16 +27,19 @@
             placeholder="$i18n{addSiteExceptionPlaceholder}"
             value="{{site_}}" on-input="validate_"
             error-message="$i18n{notValidWebAddress}" autofocus></paper-input>
-        <paper-checkbox id="incognito" hidden$="[[!showIncognitoSessionOnly_]]">
-          $i18n{incognitoSiteOnly}
-        </paper-checkbox>
+        <div id="checkboxContainer">
+          <paper-checkbox id="incognito"
+              hidden$="[[!showIncognitoSessionOnly_]]">

[Dan Beam, 2017/04/19 01:20:08]

can you just change hidden$= to using visibility: hidden; in CSS?

[dschuyler, 2017/04/19 19:20:40]

Done.

+            $i18n{incognitoSiteOnly}
+          </paper-checkbox>
+        </div>
       </div>
       <div class="button-container">
         <paper-button class="cancel-button" on-tap="onCancelTap_">
           $i18n{cancel}
         </paper-button>
-        <paper-button class="action-button" id="add"
-            on-tap="onSubmit_" disabled>
+        <paper-button class="action-button" id="add" on-tap="onSubmit_"
+            disabled>
           $i18n{add}
         </paper-button>
       </div>