[MD settings] using h2 for sub-headers consistently.

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 90e3a12d1e2ac8a3f839332498593ae3e1626206..7fd219cd7185cb099dc2df88bb8ed35d75624c82 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
@@ -15,10 +15,6 @@
   <link rel="import" type="css" href="chrome://resources/css/action_link.css">
   <template>
     <style include="settings-shared passwords-shared">
-      #manageLink {
-        margin-bottom: 24px;
-      }
-
       #password {
         background-color: transparent;
         border: none;
@@ -61,7 +57,7 @@
         sub-label="$i18n{passwordsAutosigninDescription}">
     </settings-checkbox>
     <div id="manageLink">$i18nRaw{managePasswordsLabel}</div>
-    <div class="heading">$i18n{savedPasswordsHeading}</div>
+    <h2>$i18n{savedPasswordsHeading}</h2>
     <div class="item-list" scrollable>
       <div class="list-item column-header">
         <div class="website-column">$i18n{editPasswordWebsiteLabel}</div>
@@ -109,7 +105,7 @@
           item="[[activePassword]]">
       </password-edit-dialog>
     </template>
-    <div class="heading">$i18n{passwordExceptionsHeading}</div>
+    <h2>$i18n{passwordExceptionsHeading}</h2>

[hcarmona, 2016/08/24 23:41:21]

Extra space here also.

[dschuyler, 2016/08/25 02:00:53]

Acknowledged.

     <div id="passwordExceptionsList"
         class="vertical-list list-section item-list">
       <template is="dom-repeat" items="[[passwordExceptions]]"