MD Settings: Add MIDI devices to Content Settings

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

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_vars_css.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <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-light.html">
 <link rel="import" href="../clear_browsing_data_dialog/clear_browsing_data_dialog.html">
 <link rel="import" href="../controls/settings_toggle_button.html">
@@ skipping 375 matching lines @@
               toggle-off-label="$i18n{siteSettingsUnsandboxedPluginsBlock}"
               toggle-on-label=
                   "$i18n{siteSettingsUnsandboxedPluginsAskRecommended}"
               category="{{ContentSettingsTypes.UNSANDBOXED_PLUGINS}}">
           </category-default-setting>
           <category-setting-exceptions
               category="{{ContentSettingsTypes.UNSANDBOXED_PLUGINS}}">
           </category-setting-exceptions>
         </settings-subpage>
       </template>
+      <template is="dom-if" route-path="/content/midiDevices" no-search>
+        <settings-subpage page-title="$i18n{siteSettingsMidiDevices}">
+          <category-default-setting
+              toggle-off-label="$i18n{siteSettingsMidiDevicesBlock}"
+              toggle-on-label=
+                  "$i18n{siteSettingsMidiDevicesAskRecommended}"
+              category="{{ContentSettingsTypes.MIDI_DEVICES}}">
+          </category-default-setting>
+          <category-setting-exceptions
+              category="{{ContentSettingsTypes.MIDI_DEVICES}}">
+          </category-setting-exceptions>
+        </settings-subpage>
+      </template>
       <template is="dom-if" route-path="/content/usbDevices" no-search>
         <settings-subpage page-title="$i18n{siteSettingsUsbDevices}">
           <usb-devices></usb-devices>
         </settings-subpage>
       </template>
       <template is="dom-if" route-path="/content/siteDetails" no-search>
         <settings-subpage page-title="$i18n{siteSettingsSiteDetails}">
           <site-details></site-details>
         </settings-subpage>
       </template>
@@ skipping 37 matching lines @@
                 category="{{ContentSettingsTypes.PROTECTED_CONTENT}}">
             </category-setting-exceptions>
           </template>
 </if>
         </settings-subpage>
       </template>
     </settings-animated-pages>
   </template>
   <script src="privacy_page.js"></script>
 </dom-module>