iframes with allowpaymentrequest attribute are allowed to make payment requests.

third_party/WebKit/Source/web/WebFrame.cpp

 // Copyright 2014 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 "public/web/WebFrame.h"
 
 #include "bindings/core/v8/WindowProxyManager.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 122 matching lines @@
 void WebFrame::setFrameOwnerProperties(
     const WebFrameOwnerProperties& properties) {
   // At the moment, this is only used to replicate frame owner properties
   // for frames with a remote owner.
   RemoteFrameOwner* owner = toRemoteFrameOwner(toImplBase()->frame()->owner());
   DCHECK(owner);
   owner->setScrollingMode(properties.scrollingMode);
   owner->setMarginWidth(properties.marginWidth);
   owner->setMarginHeight(properties.marginHeight);
   owner->setAllowFullscreen(properties.allowFullscreen);
+  owner->setAllowPaymentRequest(properties.allowPaymentRequest);
   owner->setCsp(properties.requiredCsp);
   owner->setDelegatedpermissions(properties.delegatedPermissions);
 }
 
 WebFrame* WebFrame::opener() const {
   return m_opener;
 }
 
 void WebFrame::setOpener(WebFrame* opener) {
   if (m_opener)
@@ skipping 193 matching lines @@
   void WebFrame::clearWeakFrames(VisitorDispatcher visitor) {              \
     clearWeakFramesImpl(visitor);                                          \
   }
 
 DEFINE_VISITOR_METHOD(Visitor*)
 DEFINE_VISITOR_METHOD(InlinedGlobalMarkingVisitor)
 
 #undef DEFINE_VISITOR_METHOD
 
 }  // namespace blink