Add custom Polymer network icon element

ui/webui/resources/webui_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This comment is only here because changes to resources are not picked up
 without changes to the corresponding grd file. -->
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/webui_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="grit/webui_resources_map.cc"
             type="resource_file_map_source" />
@@ skipping 184 matching lines @@
       <include name="IDR_WEBUI_IMAGES_SELECT"
                file="images/select.png" type="BINDATA" />
       <include name="IDR_WEBUI_IMAGES_SPINNER"
                file="images/spinner.svg" type="BINDATA" />
       <include name="IDR_WEBUI_IMAGES_THROBBER"
                file="images/throbber.svg" type="BINDATA" />
       <include name="IDR_WEBUI_IMAGES_TRASH"
                file="images/trash.png" type="BINDATA" />
       <include name="IDR_WEBUI_IMAGES_CLOUDS"
                file="images/clouds.png" type="BINDATA" />
+      <include name="IDR_WEBUI_CR_NETWORK_ICON_ETHERNET"
+               file="images/polymer_elements/cr_network_icon/ethernet.png" 
+               type="BINDATA" />
+      <include name="IDR_WEBUI_CR_NETWORK_ICON_WIFI"
+               file="images/polymer_elements/cr_network_icon/wifi.png" 
+               type="BINDATA" />
+      <include name="IDR_WEBUI_CR_NETWORK_ICON_MOBILE"
+               file="images/polymer_elements/cr_network_icon/mobile.png" 
+               type="BINDATA" />
+      <include name="IDR_WEBUI_CR_NETWORK_ICON_VPN"
+               file="images/polymer_elements/cr_network_icon/vpn.png" 
+               type="BINDATA" />
+      <include name="IDR_WEBUI_CR_NETWORK_ICON_SECURE"
+               file="images/polymer_elements/cr_network_icon/secure.png" 
+               type="BINDATA" />
     </includes>
     <structures>
       <structure name="IDR_WEBUI_CSS_ALERT_OVERLAY"
                  file="css/alert_overlay.css" type="chrome_html" />
       <structure name="IDR_WEBUI_CSS_BUBBLE"
                  file="css/bubble.css" type="chrome_html" />
       <structure name="IDR_WEBUI_CSS_BUBBLE_BUTTON"
                  file="css/bubble_button.css" type="chrome_html" />
       <structure name="IDR_WEBUI_CSS_BUTTER_BAR"
                  file="css/butter_bar.css" type="chrome_html" />
@@ skipping 42 matching lines @@
       <structure name="IDR_WEBUI_JS_ACTION_LINK"
                  file="js/action_link.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_ASSERT"
                  file="js/assert.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_CR"
                  file="js/cr.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_CR_EVENT_TARGET"
                  file="js/cr/event_target.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_CR_LINK_CONTROLLER"
                  file="js/cr/link_controller.js" type="chrome_html" />
+      <structure name="IDR_WEBUI_JS_CR_NETWORK_ICON_CSS"
+                 file="js/cr/polymer_elements/cr_network_icon/cr-network-icon.css" type="chrome_html" /> 
+      <structure name="IDR_WEBUI_JS_CR_NETWORK_ICON_HTML"
+                 file="js/cr/polymer_elements/cr_network_icon/cr-network-icon.html" type="chrome_html" /> 
+      <structure name="IDR_WEBUI_JS_CR_NETWORK_ICON_JS"
+                 file="js/cr/polymer_elements/cr_network_icon/cr-network-icon.js" type="chrome_html" /> 
       <structure name="IDR_WEBUI_JS_CR_UI"
                  file="js/cr/ui.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_CR_UI_ALERT_OVERLAY"
                  file="js/cr/ui/alert_overlay.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_CR_UI_ARRAY_DATA_MODEL"
                  file="js/cr/ui/array_data_model.js"
                  type="chrome_html" flattenhtml="true" />
       <structure name="IDR_WEBUI_JS_CR_UI_AUTOCOMPLETE_LIST"
                  file="js/cr/ui/autocomplete_list.js"
                  type="chrome_html" />
@@ skipping 92 matching lines @@
                  file="js/i18n_template_no_process.js"
                  type="chrome_html" />
       <structure name="IDR_WEBUI_JS_LOAD_TIME_DATA"
                  file="js/load_time_data.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_MEDIA_COMMON"
                  file="js/media_common.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_PARSE_HTML_SUBSET"
                  file="js/parse_html_subset.js" type="chrome_html" />
       <structure name="IDR_WEBUI_JS_UTIL"
                  file="js/util.js" type="chrome_html" flattenhtml="true" />
-      <structure name="IDR_WEBUI_JS_WEBUI_RESOURCE_TEST"
-                 file="js/webui_resource_test.js" type="chrome_html" />
       <if expr="chromeos">
         <structure name="IDR_WEBUI_CSS_UI_ACCOUNT_TWEAKS"
                    file="css/chromeos/ui_account_tweaks.css"
                    type="chrome_html" />
         <structure name="IDR_WEBUI_JS_UI_ACCOUNT_TWEAKS"
                    file="js/chromeos/ui_account_tweaks.js"
                    type="chrome_html" />
       </if>
       <part file="polymer_resources.grdp" />
     </structures>
   </release>
 </grit>