MD History: Only load needed paper-icon-buttons instead of whole set of icons

chrome/browser/resources/md_history/history_item.html

+<link rel="import" href="chrome://resources/cr_elements/cr_icons.html">

[michaelpg, 2016/05/11 16:50:48]

now "icons.html"

[lshang, 2016/05/12 04:30:26]

Done.

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
-<link rel="import" href="chrome://resources/polymer/v1_0/iron-icons/iron-icons.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-checkbox/paper-checkbox.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/html/util.html">
 <link rel="import" href="chrome://history/shared_style.html">
+<link rel="import" href="chrome://history/history_icons.html">
 
 <dom-module id="history-item">
   <template>
     <style include="shared-style">
       :host {
         @apply(--layout-center);
         @apply(--layout-vertical);
         padding: 0 var(--card-padding-side);
       }
 
@@ skipping 103 matching lines @@
       <div id="item-container">
         <paper-checkbox id="checkbox" on-tap="onCheckboxSelected_"
             checked="{{selected}}" disabled="[[selectionNotAllowed_()]]">
         </paper-checkbox>
         <span id="time-accessed">[[item.readableTimestamp]]</span>
         <div class="website-icon" id="icon"></div>
         <div id="title-and-domain">
           <a href="[[item.url]]" id="title" class="website-title"></a>
           <span id="domain">[[item.domain]]</span>
         </div>
-        <iron-icon icon="star" id="bookmark-star"></iron-icon>
-        <paper-icon-button icon="more-vert" id="menu-button"
+        <iron-icon icon="history-icons:star" id="bookmark-star"></iron-icon>
+        <paper-icon-button icon="cr-icons:more-vert" id="menu-button"

[michaelpg, 2016/05/11 16:50:48]

now "cr:more-vert"

[lshang, 2016/05/12 04:30:26]

Done.

             on-tap="onMenuButtonTap_">
         </paper-icon-button>
       </div>
       <template is="dom-if" if="[[hasTimeGap]]">
         <div id="time-gap-separator"></div>
       </template>
     </div>
   </template>
   <script src="chrome://history/history_item.js"></script>
 </dom-module>