Adding the chrome://copresence page

chrome/browser/browser_resources.grd

Index: chrome/browser/browser_resources.grd
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index 7b44f42a09c2900481e1a0e82298a72c573187b9..1b7fa7de0b85627f0660da72de36c28549244973 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -119,6 +119,11 @@
         <include name="IDR_CONTEXTUAL_SEARCH_PROMO_JS" file="resources\contextual_search\promo.js" flattenhtml="true" type="BINDATA" />
         <include name="IDR_CONTEXTUAL_SEARCH_PROMO_HEADER_SVG" file="resources\contextual_search\header.svg" type="BINDATA" />
       </if>
+      <if expr="not is_android and not is_ios">
+        <include name="IDR_COPRESENCE_CSS" file="resources\copresence.css" type="BINDATA" />
+        <include name="IDR_COPRESENCE_HTML" file="resources\copresence.html" type="BINDATA" />
+        <include name="IDR_COPRESENCE_JS" file="resources\copresence.js" type="BINDATA" />
+      </if>
       <if expr="enable_printing">
         <include name="IDR_CLOUDPRINT_MANIFEST" file="resources\cloud_print_app\manifest.json" type="BINDATA" />
       </if>