Implemented UI for the meetings controller out-of-box.

chrome/browser/browser_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/browser_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="browser_resources.pak" type="data_package" />
   </outputs>
   <release seq="1">
     <structures>
@@ skipping 58 matching lines @@
         <structure name="IDR_OOBE_HTML" file="resources\chromeos\login\oobe.html" flattenhtml="true" type="chrome_html" variables="OOBE=oobe" expand_variables="true"/>
         <structure name="IDR_OOBE_JS" file="resources\chromeos\login\oobe.js" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_OOBE_ENROLLMENT_HTML" file="resources\chromeos\login\oobe_screen_oauth_enrollment.html" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_OOBE_ENROLLMENT_CSS" file="resources\chromeos\login\oobe_screen_oauth_enrollment.css" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_OOBE_ENROLLMENT_JS" file="resources\chromeos\login\oobe_screen_oauth_enrollment.js" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_KEYBOARD_UTILS_JS" file="resources\chromeos\keyboard\keyboard_utils.js" flattenhtml="true" type="chrome_html" />
         <structure name="IDR_NETWORK_CONFIG_JS" file="resources\chromeos\network\network_config.js" flattenhtml="true" type="chrome_html" />
         <!-- TODO(dzhioev): move polymer to chrome://resources when
              http://crbug.com/418199 is fixed. -->
         <part file="polymer_resources.grdp" />
+        <structure name="IDR_CUSTOM_ELEMENTS_HTML" file="resources\chromeos\login\custom_elements.html" flattenhtml="true" type="chrome_html" variables="OOBE=oobe" expand_variables="true"/>

[Nikita (slow), 2014/10/13 17:23:40]

nit: variables not needed

[dzhioev (left Google), 2014/10/15 14:07:42]

Done.

+        <structure name="IDR_CUSTOM_ELEMENTS_JS" file="resources\chromeos\login\custom_elements.js" flattenhtml="true" type="chrome_html" />
       </if>
       <structure name="IDR_READER_OUT_OF_DATE_HTML" file="resources\reader_out_of_date.html" flattenhtml="true" type="chrome_html" />
       <structure name="IRD_SECURITY_INTERSTITIAL_HTML" file="resources\security_warnings\interstitial_v2.html" flattenhtml="true" type="chrome_html" />
     </structures>
     <includes>
       <if expr="is_win">
         <include name="IDR_ABOUT_CONFLICTS_HTML" file="resources\about_conflicts.html" flattenhtml="true" allowexternalscript="true" type="BINDATA" />
         <include name="IDR_ABOUT_CONFLICTS_JS" file="resources\about_conflicts.js" type="BINDATA" />
       </if>
       <if expr="not is_android">
@@ skipping 350 matching lines @@
           <include name="IDR_CANGJIE_MANIFEST" file="resources\chromeos\input_method\cangjie_manifest.json" type="BINDATA" />
           <include name="IDR_MOZC_MANIFEST" file="resources\chromeos\input_method\mozc_manifest.json" type="BINDATA" />
         </if>
         <include name="IDR_HANGUL_MANIFEST" file="resources\chromeos\input_method\hangul_manifest.json" type="BINDATA" />
         <include name="IDR_BRAILLE_MANIFEST" file="resources\chromeos\braille_ime\manifest.json" type="BINDATA" />
       </if>
       <include name="IDR_WHISPERNET_PROXY_MANIFEST" file="resources\whispernet_proxy\manifest.json" type="BINDATA" />
     </includes>
   </release>
 </grit>