[DO NOT SUBMIT] Support allowpaymentrequest with out-of-process iframes

third_party/WebKit/Source/core/html/HTMLIFrameElement.h

Index: third_party/WebKit/Source/core/html/HTMLIFrameElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLIFrameElement.h b/third_party/WebKit/Source/core/html/HTMLIFrameElement.h
index 8346a9149ca7a1de335b947120249073df73aa78..8608f967d8f6fa32bffaf4203e974518de8d533a 100644
--- a/third_party/WebKit/Source/core/html/HTMLIFrameElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLIFrameElement.h
@@ -76,6 +76,7 @@ class CORE_EXPORT HTMLIFrameElement final
   ReferrerPolicy referrerPolicyAttribute() override;
 
   bool allowFullscreen() const override { return m_allowFullscreen; }
+  bool allowPaymentRequest() const override { return m_allowPaymentRequest; }
 
   AtomicString csp() const override { return m_csp; }
 
@@ -89,6 +90,7 @@ class CORE_EXPORT HTMLIFrameElement final
   AtomicString m_csp;
   bool m_didLoadNonEmptyDocument;
   bool m_allowFullscreen;
+  bool m_allowPaymentRequest;
   Member<HTMLIFrameElementSandbox> m_sandbox;
   Member<HTMLIFrameElementPermissions> m_permissions;