PaymentApp: Add interfaces for implementing InvokePaymentApp().

content/browser/payments/payment_app_provider_impl.cc

Index: content/browser/payments/payment_app_provider_impl.cc
diff --git a/content/browser/payments/payment_app_provider_impl.cc b/content/browser/payments/payment_app_provider_impl.cc
index 0d88e87924f453dcbab518c9e667a13437863f02..197d37a9e4d06b8d9ceed16219319fc19af01aa7 100644
--- a/content/browser/payments/payment_app_provider_impl.cc
+++ b/content/browser/payments/payment_app_provider_impl.cc
@@ -61,4 +61,11 @@ PaymentAppProviderImpl::PaymentAppProviderImpl() {}
 
 PaymentAppProviderImpl::~PaymentAppProviderImpl() {}
 
+void PaymentAppProviderImpl::InvokePaymentApp(

[please use gerrit instead, 2017/01/09 14:42:12]

Needs to be under GetAllManifests() to keep the order in this file the same as
in the header file.

[zino, 2017/01/09 18:06:14]

When I wrote this code at first time, I kept the order. But it seems to be
broken at rebase time.
Sorry for my repeated mistake.

Done.

+    BrowserContext* browser_context,
+    int64_t registration_id,
+    payments::mojom::PaymentAppRequestDataPtr data) {
+  NOTIMPLEMENTED();
+}
+
 }  // namespace content