Expose customization ID via chromeInfoPrivate API

chromeos/system/statistics_provider.cc

Index: chromeos/system/statistics_provider.cc
diff --git a/chromeos/system/statistics_provider.cc b/chromeos/system/statistics_provider.cc
index 9b40d593cb9edc20f32dfdc356b78997cca7a5c9..10ad6887773841b5f5d6b6d6d74de0d4ddb062c0 100644
--- a/chromeos/system/statistics_provider.cc
+++ b/chromeos/system/statistics_provider.cc
@@ -67,6 +67,7 @@ const CommandLine::CharType kOemManifestFilePath[] =
 
 // Key values for GetMachineStatistic()/GetMachineFlag() calls.
 const char kDevSwitchBootMode[] = "devsw_boot";
+const char kCustomizationIdKey[] = "customization_id";
 const char kHardwareClassKey[] = "hardware_class";
 const char kOffersCouponCodeKey[] = "ubind_attribute";
 const char kOffersGroupCodeKey[] = "gbind_attribute";