Specify the use of RiskAdvisoryData for Wallet unmask requests on iOS.

components/autofill/core/browser/card_unmask_delegate.cc

Index: components/autofill/core/browser/card_unmask_delegate.cc
diff --git a/components/autofill/core/browser/card_unmask_delegate.cc b/components/autofill/core/browser/card_unmask_delegate.cc
index 00a8c59b175a153a756cb9bbea1d432a68f0eb7f..709acc12e5db739cdfc020ce7e22f099db8784c8 100644
--- a/components/autofill/core/browser/card_unmask_delegate.cc
+++ b/components/autofill/core/browser/card_unmask_delegate.cc
@@ -7,7 +7,16 @@
 namespace autofill {
 
 CardUnmaskDelegate::UnmaskResponse::UnmaskResponse()
-    : should_store_pan(false) {}
+    : should_store_pan(false),
+      providing_risk_advisory_data(false) {
+#if defined(OS_IOS)
+  // On iOS, we generate a RiskAdvisoryData instead of the
+  // BrowserNativeFingerprinting produced on other platforms. This field
+  // directs the Wallet client to configure the request accordingly.
+  providing_risk_advisory_data = true;
+#endif
+}
+
 CardUnmaskDelegate::UnmaskResponse::~UnmaskResponse() {}
 
 }  // namespace autofill