[Payments] Implement openWindow for service worker based payment handler

third_party/WebKit/Source/web/WebEmbeddedWorkerImplTest.cpp

Index: third_party/WebKit/Source/web/WebEmbeddedWorkerImplTest.cpp
diff --git a/third_party/WebKit/Source/web/WebEmbeddedWorkerImplTest.cpp b/third_party/WebKit/Source/web/WebEmbeddedWorkerImplTest.cpp
index f7384008f2a40670269bb597d33d834ddebf3e16..86a6efba25cf5be3cd352577881cc3963525d0a6 100644
--- a/third_party/WebKit/Source/web/WebEmbeddedWorkerImplTest.cpp
+++ b/third_party/WebKit/Source/web/WebEmbeddedWorkerImplTest.cpp
@@ -59,8 +59,14 @@ class MockServiceWorkerContextClient : public WebServiceWorkerContextClient {
                   std::unique_ptr<WebServiceWorkerClientsCallbacks>) override {
     NOTREACHED();
   }
-  void OpenWindow(const WebURL&,
-                  std::unique_ptr<WebServiceWorkerClientCallbacks>) override {
+  void OpenWindowForClients(
+      const WebURL&,
+      std::unique_ptr<WebServiceWorkerClientCallbacks>) override {
+    NOTREACHED();
+  }
+  void OpenWindowForPaymentHandler(
+      const WebURL&,
+      std::unique_ptr<WebServiceWorkerClientCallbacks>) override {
     NOTREACHED();
   }
   void PostMessageToClient(const WebString& uuid,