Implement server-side confirm request for privet registration

chrome/common/cloud_print/cloud_print_constants.cc

Index: chrome/common/cloud_print/cloud_print_constants.cc
diff --git a/chrome/common/cloud_print/cloud_print_constants.cc b/chrome/common/cloud_print/cloud_print_constants.cc
index b25773b585ffa182983a87b0644fbe8aed047ff5..15419465bba98b14ee6c8630c633dfbcdbf462f0 100644
--- a/chrome/common/cloud_print/cloud_print_constants.cc
+++ b/chrome/common/cloud_print/cloud_print_constants.cc
@@ -9,6 +9,7 @@ namespace cloud_print {
 const char kCloudPrintUserAgent[] = "GoogleCloudPrintProxy";
 const char kChromeCloudPrintProxyHeader[] = "X-CloudPrint-Proxy: Chrome";
 const char kCloudPrintPushNotificationsSource[] = "cloudprint.google.com";
+const char kCloudPrintAuth[] = "https://www.googleapis.com/auth/cloudprint";
 
 const char kProxyIdValue[] = "proxy";
 const char kPrinterNameValue[] = "printer";
@@ -57,4 +58,3 @@ const char kJobFetchReasonFailure[] = "failure";
 const char kJobFetchReasonRetry[] = "retry";
 
 }  // namespace cloud_print
-