iframes with allowpaymentrequest attribute are allowed to make payment requests.

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

+// Copyright 2016 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/HTMLIFrameElementPayments.h"
+
+#include "core/dom/QualifiedName.h"
+#include "core/html/HTMLIFrameElement.h"
+
+namespace blink {
+
+HTMLIFrameElementPayments::HTMLIFrameElementPayments() {}
+
+// static
+const char* HTMLIFrameElementPayments::supplementName() {
+  return "HTMLIFrameElementPayments";
+}
+
+// static
+bool HTMLIFrameElementPayments::fastHasAttribute(
+    const QualifiedName& name,
+    const HTMLIFrameElement& element) {
+  DCHECK(name == HTMLNames::allowpaymentrequestAttr);
+  return element.fastHasAttribute(name);
+}
+
+// static
+void HTMLIFrameElementPayments::setBooleanAttribute(const QualifiedName& name,
+                                                    HTMLIFrameElement& element,
+                                                    bool value) {
+  DCHECK(name == HTMLNames::allowpaymentrequestAttr);
+  element.setBooleanAttribute(name, value);
+}
+
+// static
+HTMLIFrameElementPayments& HTMLIFrameElementPayments::from(
+    HTMLIFrameElement& iframe) {
+  HTMLIFrameElementPayments* supplement =
+      static_cast<HTMLIFrameElementPayments*>(
+          Supplement<HTMLIFrameElement>::from(iframe, supplementName()));
+  if (!supplement) {
+    supplement = new HTMLIFrameElementPayments();
+    provideTo(iframe, supplementName(), supplement);
+  }
+  return *supplement;
+}
+
+// static
+bool HTMLIFrameElementPayments::allowPaymentRequest(
+    HTMLIFrameElement& element) {
+  return element.fastHasAttribute(HTMLNames::allowpaymentrequestAttr);
+}
+
+DEFINE_TRACE(HTMLIFrameElementPayments) {
+  Supplement<HTMLIFrameElement>::trace(visitor);
+}
+
+}  // namespace blink