[MD WebUI] Move icons used in Bookmarks and Settings to shared file.

chrome/browser/resources/settings/internet_page/network_siminfo.html

 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
+<link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.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-input/paper-input.html">
-<link rel="import" href="/icons.html">
 <link rel="import" href="internet_shared_css.html">
 
 <dom-module id="network-siminfo">
   <template>
     <style include="internet-shared">
       iron-icon {
        -webkit-margin-end: 10px;
       }
 
       .dialog-error {
@@ skipping 23 matching lines @@
 
       .settings-box:first-of-type {
         border-top: none;
       }
     </style>
 
     <!-- SIM missing UI -->
     <div class="settings-box two-line"
         hidden$="[[networkProperties.Cellular.SIMPresent]]">
       <div class="start layout horizontal center">
-        <iron-icon icon="settings:sim-card-alert"></iron-icon>
+        <iron-icon icon="cr:sim-card-alert"></iron-icon>
         <div class="error">$i18n{networkSimCardMissing}</div>
       </div>
     </div>
 
     <!-- SIM locked -->
     <div class="settings-box two-line"
         hidden$="[[!showSimLocked_(networkProperties)]]">
       <div class="start layout horizontal center">
-        <iron-icon icon="settings:lock"></iron-icon>
+        <iron-icon icon="cr:lock"></iron-icon>
         <div class="error">$i18n{networkSimCardLocked}</div>
       </div>
       <div class="secondary-action">
         <paper-button on-tap="onUnlockPinTap_">
           $i18n{networkSimUnlock}
         </paper-button>
       </div>
     </div>
 
     <!-- SIM unlocked -->
@@ skipping 94 matching lines @@
       </div>
       <div class="button-container">
         <paper-button on-tap="sendUnlockPuk_">
           $i18n{networkSimUnlock}
         </paper-button>
       </div>
     </dialog>
   </template>
   <script src="network_siminfo.js"></script>
 </dom-module>