Add use counter for more ~high entropy API calls.

hasEnrolledInstrument is a new API added to PaymentRequest spec to
replace the current canMakePayment API, which is considered ~high entroy
in crrev.com/c/1384047.

Bug: 915620,915907
Change-Id: I7ad4f37ef4223d89e142f29c9003f07311ec5ca1
Reviewed-on: https://chromium-review.googlesource.com/c/1391708
Commit-Queue: Danyao Wang <danyao@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619421}

third_party/blink/public/platform/web_feature.mojom

@@ -2159,6 +2159,7 @@ enum WebFeature {
   kV8HTMLMediaElement_CanPlayType_Method = 2718,
   kHistoryLength = 2719,
   kFeaturePolicyReportOnlyHeader = 2720,
+  kV8PaymentRequest_HasEnrolledInstrument_Method = 2721,
 
   // Add new features immediately above this line. Don't change assigned
   // numbers of any item, and don't reuse removed slots.

third_party/blink/renderer/modules/payments/payment_request.idl

@@ -17,7 +17,7 @@
     [CallWith=ScriptState, NewObject] Promise<PaymentResponse> show();
     [CallWith=ScriptState, NewObject] Promise<void> abort();
     [CallWith=ScriptState, HighEntropy, Measure, NewObject] Promise<boolean> canMakePayment();
-    [CallWith=ScriptState, NewObject, RuntimeEnabled=PaymentRequestHasEnrolledInstrument] Promise<boolean> hasEnrolledInstrument();
+    [CallWith=ScriptState, HighEntropy, Measure, NewObject, RuntimeEnabled=PaymentRequestHasEnrolledInstrument] Promise<boolean> hasEnrolledInstrument();
 
     readonly attribute DOMString id;
     [ImplementedAs=getShippingAddress] readonly attribute PaymentAddress? shippingAddress;

tools/metrics/histograms/enums.xml

@@ -21145,6 +21145,7 @@ Called by update_net_error_codes.py.-->
   <int value="2718" label="V8HTMLMediaElement_CanPlayType_Method"/>
   <int value="2719" label="HistoryLength"/>
   <int value="2720" label="FeaturePolicyReportOnlyHeader"/>
+  <int value="2721" label="V8PaymentRequest_HasEnrolledInstrument_Method"/>
 </enum>
 
 <enum name="FeaturePolicyFeature">