Pass list of printers to chrome using file.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index f8085c5f02c0980d8d37f8cac9a3a881a1a392f2..89a46a2a847bbd1e8420cf074e01c545121f5ac6 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -174,6 +174,11 @@ const char kCloudPrintPrintTicket[]         = "cloud-print-print-ticket";
 // Used with kCloudPrintFile to specify a title for the resulting print job.
 const char kCloudPrintJobTitle[]            = "cloud-print-job-title";
 
+// Setup cloud print proxy for for provided printers. This does not start
+// service or register proxy for autostart.
+const char kCloudPrintConnectoEnablePrinters[] =
+    "cloud-print-connector-enable-printers";
+
 // The URL of the cloud print service to use, overrides any value stored in
 // preferences, and the default. Only used if the cloud print service has been
 // enabled (see enable-cloud-print).