[MD settings] small change to privacy page to better match UI mocks

This CL changes the buttons from being side-by-side (old style)
to being vertically listed (new mocks).

BUG=517564

Review URL: https://codereview.chromium.org/1465393002

Cr-Commit-Position: refs/heads/master@{#361403}

chrome/browser/resources/settings/privacy_page/privacy_page.css

@@ -2,6 +2,10 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
+paper-item {
+  --paper-item-min-height: 24px;
+}
+
 .privacy-buttons {
   margin-top: 25px;
-}
\ No newline at end of file
+}

chrome/browser/resources/settings/privacy_page/privacy_page.html

@@ -3,6 +3,7 @@
 <link rel="import" href="chrome://resources/polymer/v1_0/neon-animation/neon-animatable.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
+<link rel="import" href="chrome://resources/polymer/v1_0/paper-item/paper-item-body.html">
 <link rel="import" href="chrome://md-settings/certificate_manager_page/certificate_manager_page.html">
 <link rel="import" href="chrome://md-settings/clear_browsing_data_page/clear_browsing_data_page.html">
 <link rel="import" href="chrome://md-settings/controls/settings_checkbox.html">
@@ -68,18 +69,23 @@
           </settings-checkbox>
 </if>
         </div>
-        <div class="settings-box end-justified">
-          <paper-button
-              on-tap="onManageCertificatesTap_"
-              i18n-content="manageCertificates">
-          </paper-button>
-          <paper-button
-              on-tap="onSiteSettingsTap_"
-              i18n-content="siteSettings">
-          </paper-button>
-          <paper-button
-              on-tap="onClearBrowsingDataTap_"
-              raised i18n-content="clearBrowsingData">
+        <div class="settings-box" on-tap="onManageCertificatesTap_">
+          <paper-item>
+            <paper-item-body>
+              <div i18n-content="manageCertificates"></div>
+            </paper-item-body>
+          </paper-item>
+        </div>
+        <div class="settings-box" on-tap="onSiteSettingsTap_">
+          <paper-item>
+            <paper-item-body>
+              <div i18n-content="siteSettings"></div>
+            </paper-item-body>
+          </paper-item>
+        </div>
+        <div class="settings-box">
+          <paper-button on-tap="onClearBrowsingDataTap_"
+              i18n-content="clearBrowsingData">
           </paper-button>
         </div>
       </neon-animatable>