PaymentApp: Implement simulateInvokingPaymentApp() for LayoutTest.

content/shell/renderer/layout_test/blink_test_runner.cc

Index: content/shell/renderer/layout_test/blink_test_runner.cc
diff --git a/content/shell/renderer/layout_test/blink_test_runner.cc b/content/shell/renderer/layout_test/blink_test_runner.cc
index adee3a939ca936178f05ad598e6f7abff7e8e23b..bff0b180b7fb81583ac02655ead8a07624b9393b 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -252,6 +252,7 @@ WebURL RewriteAbsolutePathInWPT(const std::string& utf8_url) {
 BlinkTestRunner::BlinkTestRunner(RenderView* render_view)
     : RenderViewObserver(render_view),
       RenderViewObserverTracker<BlinkTestRunner>(render_view),
+      payment_app_provider_(nullptr),
       is_main_window_(false),
       focus_on_next_commit_(false),
       leak_detector_(new LeakDetector(this)) {
@@ -551,6 +552,15 @@ void BlinkTestRunner::SendBluetoothManualChooserEvent(
                                                             argument));
 }
 
+void BlinkTestRunner::GetAllPaymentAppIDs(
+    const base::Callback<void(const std::vector<int64_t>&)>& callback) {
+  GetPaymentAppProvider().GetAllPaymentAppIDs(callback);
+}
+
+void BlinkTestRunner::InvokePaymentApp(int64_t registration_id) {
+  GetPaymentAppProvider().InvokePaymentApp(registration_id);
+}
+
 void BlinkTestRunner::SetFocus(blink::WebView* web_view, bool focus) {
   RenderView* render_view = RenderView::FromWebView(web_view);
   if (render_view)  // Check whether |web_view| has been already closed.
@@ -947,6 +957,15 @@ BlinkTestRunner::GetBluetoothFakeAdapterSetter() {
   return *bluetooth_fake_adapter_setter_;
 }
 
+mojom::LayoutTestPaymentAppProvider&
+BlinkTestRunner::GetPaymentAppProvider() {
+  if (!payment_app_provider_) {
+    RenderThread::Get()->GetRemoteInterfaces()->GetInterface(
+        mojo::MakeRequest(&payment_app_provider_));
+  }
+  return *payment_app_provider_;
+}
+
 void BlinkTestRunner::OnSetupSecondaryRenderer() {
   DCHECK(!is_main_window_);