[MD settings] touch up sub-page titles and icons

chrome/browser/resources/settings/settings_ui/settings_ui.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-drawer-panel/paper-drawer-panel.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-styles/shadow.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-styles/typography.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toolbar/paper-toolbar.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://md-settings/direction_delegate.html">
 <link rel="import" href="chrome://md-settings/i18n_setup.html">
 <link rel="import" href="chrome://md-settings/icons.html">
 <link rel="import" href="chrome://md-settings/settings_main/settings_main.html">
 <link rel="import" href="chrome://md-settings/settings_menu/settings_menu.html">
 <link rel="import" href="chrome://md-settings/settings_page/settings_router.html">
 <link rel="import" href="chrome://md-settings/settings_shared_css.html">
 
 <dom-module id="settings-ui">
   <template>
     <style include="settings-shared">
       :host {
         @apply(--layout-vertical);
         @apply(--layout-fit);
         -webkit-user-select: none;
         background-color: var(--settings-background-color);
       }
 
       iron-icon {
        --iron-icon-fill-color: var(--settings-title-bar-color);
-       --iron-icon-stroke-color: var(--settings-title-bar-color);
       }
 
       paper-toolbar {
         @apply(--shadow-elevation-4dp);
         --paper-toolbar-title: {
           font-size: 123.08%;
         };
         background-color: var(--settings-title-bar-background-color);
         min-height: 56px;
         position: relative;
@@ skipping 28 matching lines @@
     <paper-drawer-panel drawer-width="256px" id="panel">
       <settings-menu drawer class="flex" current-route="{{currentRoute}}">
       </settings-menu>
       <settings-main main prefs="{{prefs}}" current-route="{{currentRoute}}">
         <paper-icon-button icon="menu" paper-drawer-toggle></paper-icon-button>
       </settings-main>
     </paper-drawer-panel>
   </template>
   <script src="settings_ui.js"></script>
 </dom-module>