Use production Wallet service URL by default.

components/autofill/core/common/autofill_switches.cc

Index: components/autofill/core/common/autofill_switches.cc
diff --git a/components/autofill/core/common/autofill_switches.cc b/components/autofill/core/common/autofill_switches.cc
index c80f87eb469cede020fd1c717cee35b3368ac9c6..c752cc7d4681b4f922e3873789b8a6798414e4b3 100644
--- a/components/autofill/core/common/autofill_switches.cc
+++ b/components/autofill/core/common/autofill_switches.cc
@@ -35,9 +35,8 @@ const char kWalletSecureServiceUrl[]        = "wallet-secure-service-url";
 // API calls.
 const char kWalletServiceUrl[]              = "wallet-service-url";
 
-// Enable production Online Wallet service. If this flag is not set, the sandbox
-// service will be used.
-const char kWalletServiceUseProd[]          = "wallet-service-use-prod";
+// Use the sandbox Online Wallet service URL (for developer testing).
+const char kWalletServiceUseSandbox[]       = "wallet-service-use-sandbox";
 
 }  // namespace switches
 }  // namespace autofill