Implement important sites dialog for desktop.

chrome/browser/resources/settings/settings_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1" output_all_resource_defines="false">
   <outputs>
     <output filename="grit/settings_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="grit/settings_resources_map.cc"
             type="resource_file_map_source" />
     <output filename="grit/settings_resources_map.h"
             type="resource_map_header" />
@@ skipping 377 matching lines @@
                  type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_EXTENSION_CONTROLLED_INDICATOR_HTML"
                  file="controls/extension_controlled_indicator.html"
                  type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_CHECKBOX_HTML"
                  file="controls/settings_checkbox.html"
                  type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_CHECKBOX_JS"
                  file="controls/settings_checkbox.js"
                  type="chrome_html" />
+      <structure name="IDR_IMPORTANT_SITES_CONTROLS_CHECKBOX_HTML"

[dschuyler, 2017/04/07 00:02:06]

Please use the pattern:
IDR_SETTINGS_CONTROLS_IMPORTANT_SITE_CHECKBOX_HTML
i.e. the IDR mimics the path to the file.

Also s/SITES/SITE/ since the file name is singular.

[dullweber, 2017/04/07 09:39:21]

Done.

+                 file="controls/important_site_checkbox.html"
+                 type="chrome_html" />
+      <structure name="IDR_IMPORTANT_SITES_CONTROLS_CHECKBOX_JS"
+                 file="controls/important_site_checkbox.js"
+                 type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_DROPDOWN_MENU_HTML"
                  file="controls/settings_dropdown_menu.html"
                  type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_DROPDOWN_MENU_JS"
                  file="controls/settings_dropdown_menu.js"
                  type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_INPUT_HTML"
                  file="controls/settings_input.html"
                  type="chrome_html" />
       <structure name="IDR_SETTINGS_CONTROLS_INPUT_JS"
@@ skipping 884 matching lines @@
                    type="chrome_html" />
         <structure name="IDR_SETTINGS_USERS_PAGE_HTML"
                    file="people_page/users_page.html"
                    type="chrome_html"
                    preprocess="true"
                    allowexternalscript="true" />
       </if>
     </structures>
   </release>
 </grit>