MD Extensions: Replace toolbar/search field with cr-toolbar

ui/webui/resources/cr_elements/cr_toolbar/cr_toolbar.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-media-query/iron-media-query.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_search_field.html">
 
 <dom-module id="cr-toolbar">
   <template>
     <style>
       :host {
         --cr-toolbar-field-width: 580px;
         --cr-toolbar-height: 56px;
+        align-items: center;
         color: #fff;
         display: flex;
         height: var(--cr-toolbar-height);
       }
 
       h1 {
         -webkit-margin-start: 6px;
         -webkit-padding-end: 2px;
         flex: 1;
         font-size: 123%;
@@ skipping 15 matching lines @@
       #menuButton {
         height: 32px;
         margin-bottom: 6px;
         margin-top: 6px;
         min-width: 32px;
         padding: 6px;
         width: 32px;
       }
 
       #centeredContent {
-        -webkit-margin-start: var(--cr-toolbar-field-margin, 0);
         display: flex;
         flex: 1 1 0;
         justify-content: center;
       }
 
       :host([narrow_]) #centeredContent {
         -webkit-padding-end: var(--cr-toolbar-field-end-padding, 12px);
       }
 
       :host(:not([narrow_])) h1 {
         @apply(--cr-toolbar-header-wide);
       }
 
       :host(:not([narrow_])) #leftContent {
         /* The amount of space left of the search field:
            (width of window - width of search field) / 2. */
         max-width: calc((100% - var(--cr-toolbar-field-width)) / 2);
         @apply(--cr-toolbar-left-content-wide);
       }
 
+      :host(:not([narrow_])) #centeredContent {
+        -webkit-margin-start: var(--cr-toolbar-field-margin, 0);
+      }
+
       :host(:not([narrow_])) #rightContent {
         @apply(--cr-toolbar-right-content-wide);
       }
 
       :host([narrow_]) #centeredContent {
         justify-content: flex-end;
       }
 
       :host([narrow_][showing-search_]) #leftContent {
         opacity: 0;
@@ skipping 75 matching lines @@
       <iron-media-query query="(max-width: 900px)" query-matches="{{narrow_}}">
       </iron-media-query>
     </div>
 
     <div id="rightContent">
       <content select=".more-actions"></content>
     </div>
   </template>
   <script src="cr_toolbar.js"></script>
 </dom-module>