PaymentHandler: Implement PaymentInstruments.delete().

third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp

Index: third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp
diff --git a/third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp b/third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp
index 0b686f23f9f40d6a9c6f384fb2f3be90c265c816..fe1336b7c35e7f35730d05a230bc4e8abd9a6753 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp
+++ b/third_party/WebKit/Source/modules/payments/PaymentInstruments.cpp
@@ -53,9 +53,22 @@ PaymentInstruments::PaymentInstruments(
     : manager_(manager) {}
 
 ScriptPromise PaymentInstruments::deleteInstrument(
+    ScriptState* script_state,
     const String& instrument_key) {
-  NOTIMPLEMENTED();
-  return ScriptPromise();
+  if (!manager_.is_bound()) {
+    return ScriptPromise::RejectWithDOMException(
+        script_state,
+        DOMException::Create(kInvalidStateError, kPaymentManagerUnavailable));
+  }
+
+  ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state);
+  ScriptPromise promise = resolver->Promise();
+
+  manager_->DeletePaymentInstrument(
+      instrument_key, ConvertToBaseCallback(WTF::Bind(
+                          &PaymentInstruments::onDeletePaymentInstrument,
+                          WrapPersistent(this), WrapPersistent(resolver))));
+  return promise;
 }
 
 ScriptPromise PaymentInstruments::get(ScriptState* script_state,
@@ -130,6 +143,14 @@ ScriptPromise PaymentInstruments::set(ScriptState* script_state,
 
 DEFINE_TRACE(PaymentInstruments) {}
 
+void PaymentInstruments::onDeletePaymentInstrument(
+    ScriptPromiseResolver* resolver,
+    payments::mojom::blink::PaymentHandlerStatus status) {
+  DCHECK(resolver);
+  resolver->Resolve(status ==
+                    payments::mojom::blink::PaymentHandlerStatus::SUCCESS);
+}
+
 void PaymentInstruments::onGetPaymentInstrument(
     ScriptPromiseResolver* resolver,
     payments::mojom::blink::PaymentInstrumentPtr stored_instrument,