Componentize IDR_NET_ERROR_HTML for sharing it with iOS.

chrome/renderer/resources/renderer_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/renderer_resources.h" type="rc_header" context="default_100_percent">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="renderer_resources_100_percent.pak" type="data_package" context="default_100_percent" />
     <output filename="renderer_resources_200_percent.pak" type="data_package" context="default_200_percent" />
     <output filename="renderer_resources_300_percent.pak" type="data_package" context="default_300_percent" />
   </outputs>
   <release seq="1">
     <structures fallback_to_low_resolution="true">
       <structure type="chrome_scaled_image" name="IDR_SAD_WEBVIEW" file="common\webview-crash.png" />
       <structure type="chrome_scaled_image" name="IDR_SAD_PLUGIN" file="common\sadplugin.png" />
     </structures>
     <includes>
       <if expr="is_android">
         <include name="IDR_MOBILE_YOUTUBE_PLUGIN_HTML" file="plugins/mobile_youtube_plugin.html" flattenhtml="true" type="BINDATA" />
       </if>
       <include name="IDR_BLOCKED_PLUGIN_HTML" file="plugins/blocked_plugin.html" flattenhtml="true" type="BINDATA" />
       <include name="IDR_DISABLED_PLUGIN_HTML" file="plugins/disabled_plugin.html" flattenhtml="true" type="BINDATA" />
-      <include name="IDR_NET_ERROR_HTML" file="neterror.html" flattenhtml="true" type="BINDATA" />
       <include name="IDR_PLUGIN_POSTER_HTML" file="plugins/plugin_poster.html" flattenhtml="true" type="BINDATA" />
 
       <!-- Searchbox API -->
       <if expr="enable_extensions or is_android">
         <include name="IDR_SEARCHBOX_API" file="extensions\searchbox_api.js" type="BINDATA" />
       </if>
 
       <!-- Extension libraries. -->
       <if expr="enable_extensions">
         <!-- Custom bindings for extension APIs. -->
@@ skipping 54 matching lines @@
         <include name="IDR_TTS_ENGINE_CUSTOM_BINDINGS_JS" file="extensions\tts_engine_custom_bindings.js" type="BINDATA" />
         <include name="IDR_WEBRTC_DESKTOP_CAPTURE_PRIVATE_CUSTOM_BINDINGS_JS" file="extensions\webrtc_desktop_capture_private_custom_bindings.js" type="BINDATA" />
         <include name="IDR_WEBSTORE_CUSTOM_BINDINGS_JS" file="extensions\webstore_custom_bindings.js" type="BINDATA" />
 
         <!-- Platform app support. -->
         <include name="IDR_INJECT_APP_TITLEBAR_JS" file="extensions\inject_app_titlebar.js" type="BINDATA" />
       </if>
     </includes>
   </release>
 </grit>