Add chrome://flags for cloud import.

chromeos/chromeos_switches.cc

Index: chromeos/chromeos_switches.cc
diff --git a/chromeos/chromeos_switches.cc b/chromeos/chromeos_switches.cc
index f608db2c05ac14e1d21c9d9b3e459e9436005375..e86c6878e32a1d83e16a8a7aa3ee55410cce7bea 100644
--- a/chromeos/chromeos_switches.cc
+++ b/chromeos/chromeos_switches.cc
@@ -78,6 +78,9 @@ const char kEnableCarrierSwitching[] = "enable-carrier-switching";
 // Enables the next generation version of ChromeVox.
 const char kEnableChromeVoxNext[] = "enable-chromevox-next";
 
+// Enables cloud backup feature.
+const char kEnableCloudBackup[] = "enable-cloud-backup";
+
 // Enables consumer management, which allows user to enroll, remotely lock and
 // locate the device.
 const char kEnableConsumerManagement[] = "enable-consumer-management";