Appropriate handling for Cellular First devices.

chromeos/chromeos_switches.h

Index: chromeos/chromeos_switches.h
diff --git a/chromeos/chromeos_switches.h b/chromeos/chromeos_switches.h
index 8b6720580895e1b5f8ad751c4f5fe5fcdfff3334..e59dc57364f6c318a4630f5974df2c42ca36f81c 100644
--- a/chromeos/chromeos_switches.h
+++ b/chromeos/chromeos_switches.h
@@ -24,7 +24,6 @@ namespace switches {
 CHROMEOS_EXPORT extern const char kAggressiveCacheDiscardThreshold[];
 CHROMEOS_EXPORT extern const char kAggressiveTabDiscardThreshold[];
 CHROMEOS_EXPORT extern const char kAggressiveThreshold[];
-CHROMEOS_EXPORT extern const char kAllowDataRoamingByDefault[];
 CHROMEOS_EXPORT extern const char kAllowFailedPolicyFetchForTest[];
 CHROMEOS_EXPORT extern const char kAllowRAInDevMode[];
 CHROMEOS_EXPORT extern const char kAppAutoLaunched[];
@@ -33,6 +32,7 @@ CHROMEOS_EXPORT extern const char kArcAvailability[];
 CHROMEOS_EXPORT extern const char kArcAvailable[];
 CHROMEOS_EXPORT extern const char kArtifactsDir[];
 CHROMEOS_EXPORT extern const char kAshWebUIInit[];
+CHROMEOS_EXPORT extern const char kCellularFirst[];
 CHROMEOS_EXPORT extern const char kChildWallpaperLarge[];
 CHROMEOS_EXPORT extern const char kChildWallpaperSmall[];
 CHROMEOS_EXPORT extern const char kConservativeThreshold[];