[Payments] Implement web payment app manifest

content/public/browser/payment_app_provider.h

Index: content/public/browser/payment_app_provider.h
diff --git a/content/public/browser/payment_app_provider.h b/content/public/browser/payment_app_provider.h
index 6572aea1578f20abd22cd509ea4b45a044bfa5d4..54a9a97dc1e18af71f665a6953295caaddd4bff4 100644
--- a/content/public/browser/payment_app_provider.h
+++ b/content/public/browser/payment_app_provider.h
@@ -12,7 +12,7 @@
 
 #include "base/callback_forward.h"
 #include "content/common/content_export.h"
-#include "content/public/browser/stored_payment_instrument.h"
+#include "content/public/browser/stored_payment_app.h"
 #include "third_party/WebKit/public/platform/modules/payments/payment_app.mojom.h"
 
 namespace content {
@@ -32,9 +32,7 @@ class CONTENT_EXPORT PaymentAppProvider {
   // Please see: content/browser/payments/payment_app_provider_impl.cc
   static PaymentAppProvider* GetInstance();
 
-  using Instruments = std::vector<std::unique_ptr<StoredPaymentInstrument>>;
-  using PaymentApps = std::map<GURL, Instruments>;
-
+  using PaymentApps = std::map<GURL, std::unique_ptr<StoredPaymentApp>>;
   using GetAllPaymentAppsCallback = base::OnceCallback<void(PaymentApps)>;
   using InvokePaymentAppCallback =
       base::Callback<void(payments::mojom::PaymentAppResponsePtr)>;