MD WebUI: Simplify cr-toolbar CSS

chrome/browser/resources/md_downloads/toolbar.html

 <link rel="import" href="chrome://downloads/action_service.html">
 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/util.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-item/paper-item.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu/paper-menu.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-menu-button/paper-menu-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_toolbar/cr_toolbar.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 
 <dom-module id="downloads-toolbar">
   <template>
     <style>
       :host {
         align-items: center;
         background: var(--md-toolbar-color);
         color: white;
         display: flex;
         min-height: 56px;
       }
 
       [hidden] {
         display: none !important;
       }
 
       #toolbar {
-        --cr-toolbar-field-end-padding: 0;
         --cr-toolbar-field-width: var(--downloads-card-width);
-        --cr-toolbar-header-wide: {
-          -webkit-margin-start: 24px;
-          -webkit-margin-end: 16px;  /* Only matters around 900px in Russian. */
-        };
-        --cr-toolbar-left-content-wide: {
-          -webkit-padding-start: 0;
-          flex: 1 0 1px;
-          max-width: none;
-          position: static;
-        };
-        --cr-toolbar-right-content-wide: {
-          flex: 1 0 1px;
-          position: static;
-        };
-        align-items: center;
         flex: 1;
       }
 
       paper-icon-button {
         --iron-icon-height: 20px;
         --iron-icon-width: 20px;
         --paper-icon-button: {
           height: 32px;
           padding: 6px;
           width: 32px;
         };
       }
 
-      .more-actions {
-        -webkit-margin-end: 16px;
-        -webkit-margin-start: 8px;
-        text-align: end;
-      }
-
       #more {
         --paper-menu-button: {
-          padding: 0;
+          padding: 6px;
         };
       }
 
       paper-menu {
         --paper-menu-selected-item: {
           font-weight: normal;
         };
       }
 
       paper-item {
@@ skipping 23 matching lines @@
                 role="menuitem" on-blur="onItemBlur_">
               $i18n{openDownloadsFolder}
             </paper-item>
           </paper-menu>
         </paper-menu-button>
       </div>
     </cr-toolbar>
   </template>
   <script src="chrome://downloads/toolbar.js"></script>
 </dom-module>