PaymentHandler: Implement PaymentInstruments.clear().

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/payments/PaymentInstruments.h"
 
 #include <utility>
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromise.h"
@@ skipping 147 matching lines @@
   }
 
   manager_->SetPaymentInstrument(
       instrument_key, std::move(instrument),
       ConvertToBaseCallback(
           WTF::Bind(&PaymentInstruments::onSetPaymentInstrument,
                     WrapPersistent(this), WrapPersistent(resolver))));
   return promise;
 }
 
+ScriptPromise PaymentInstruments::clear(ScriptState* script_state) {
+  if (!manager_.is_bound()) {
+    return ScriptPromise::RejectWithDOMException(
+        script_state,
+        DOMException::Create(kInvalidStateError, kPaymentManagerUnavailable));
+  }
+
+  ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state);
+  ScriptPromise promise = resolver->Promise();
+
+  manager_->ClearPaymentInstruments(ConvertToBaseCallback(
+      WTF::Bind(&PaymentInstruments::onClearPaymentInstruments,
+                WrapPersistent(this), WrapPersistent(resolver))));
+  return promise;
+}
+
 DEFINE_TRACE(PaymentInstruments) {}
 
 void PaymentInstruments::onDeletePaymentInstrument(
     ScriptPromiseResolver* resolver,
     payments::mojom::blink::PaymentHandlerStatus status) {
   DCHECK(resolver);
   resolver->Resolve(status ==
                     payments::mojom::blink::PaymentHandlerStatus::SUCCESS);
 }
 
@@ skipping 50 matching lines @@
 
 void PaymentInstruments::onSetPaymentInstrument(
     ScriptPromiseResolver* resolver,
     payments::mojom::blink::PaymentHandlerStatus status) {
   DCHECK(resolver);
   if (rejectError(resolver, status))
     return;
   resolver->Resolve();
 }
 
+void PaymentInstruments::onClearPaymentInstruments(
+    ScriptPromiseResolver* resolver,
+    payments::mojom::blink::PaymentHandlerStatus status) {
+  DCHECK(resolver);
+  if (rejectError(resolver, status))
+    return;
+  resolver->Resolve();
+}
+
 }  // namespace blink