[Payments] Implement payment instrument icons

third_party/WebKit/Source/modules/payments/ImageObject.idl

Index: third_party/WebKit/Source/modules/payments/ImageObject.idl
diff --git a/third_party/WebKit/Source/modules/payments/ImageObject.idl b/third_party/WebKit/Source/modules/payments/ImageObject.idl
new file mode 100644
index 0000000000000000000000000000000000000000..e380278097d25b229316ac66af349df670b4e739
--- /dev/null
+++ b/third_party/WebKit/Source/modules/payments/ImageObject.idl
@@ -0,0 +1,11 @@
+// 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.
+
+// https://github.com/w3c/payment-handler/pull/174/files/6e6768c423e24719cb0e592cd98614f052e52a78
+
+dictionary ImageObject {
+    required USVString src;
+    DOMString sizes;
+    DOMString type;
+};