Adding the chrome://copresence page

chrome/common/url_constants.cc

Index: chrome/common/url_constants.cc
diff --git a/chrome/common/url_constants.cc b/chrome/common/url_constants.cc
index f6a946e35997b96f99b7327fa90e30f685d7835e..d021367974b0e7b13bfa737cba711e3e07196384 100644
--- a/chrome/common/url_constants.cc
+++ b/chrome/common/url_constants.cc
@@ -140,6 +140,10 @@ const char kChromeUITabModalConfirmDialogURL[] =
     "chrome://tab-modal-confirm-dialog/";
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+const char kChromeUICopresenceURL[] = "chrome://copresence/";
+#endif
+
 #if defined(ENABLE_WEBRTC)
 const char kChromeUIWebRtcLogsURL[] = "chrome://webrtc-logs/";
 #endif
@@ -315,6 +319,10 @@ const char kChromeOSAssetPath[] = "/usr/share/chromeos-assets/";
 const char kChromeUITabModalConfirmDialogHost[] = "tab-modal-confirm-dialog";
 #endif
 
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+const char kChromeUICopresenceHost[] = "copresence";
+#endif
+
 #if defined(ENABLE_WEBRTC)
 const char kChromeUIWebRtcLogsHost[] = "webrtc-logs";
 #endif
@@ -622,6 +630,8 @@ const char* const kChromeHostURLs[] = {
 #endif
 #if defined(OS_ANDROID) || defined(OS_IOS)
   kChromeUINetExportHost,
+#else  // non-mobile
+  kChromeUICopresenceHost,
 #endif
 #if defined(OS_CHROMEOS)
   kChromeUICertificateManagerHost,