Revert of PaymentApp: Introduce PaymentAppDatabase class.

content/public/browser/payment_app_context.h

Index: content/public/browser/payment_app_context.h
diff --git a/content/public/browser/payment_app_context.h b/content/public/browser/payment_app_context.h
deleted file mode 100644
index 5b464bdb4d992a22a69f4c87ec102f1bde4035eb..0000000000000000000000000000000000000000
--- a/content/public/browser/payment_app_context.h
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2016 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.
-
-#ifndef CONTENT_PUBLIC_BROWSER_PAYMENT_APP_CONTEXT_H_
-#define CONTENT_PUBLIC_BROWSER_PAYMENT_APP_CONTEXT_H_
-
-#include <utility>
-#include <vector>
-
-#include "base/callback_forward.h"
-
-namespace content {
-
-class PaymentAppContext {
- public:
-  // The ManifestWithID is a pair of the service worker registration id and
-  // the payment app manifest data associated with it.
-  using ManifestWithID =
-      std::pair<int64_t, payments::mojom::PaymentAppManifestPtr>;
-  using Manifests = std::vector<ManifestWithID>;
-  using GetAllManifestsCallback = base::Callback<void(Manifests)>;
-
-  virtual void GetAllManifests(const GetAllManifestsCallback& callback) = 0;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_PAYMENT_APP_CONTEXT_H_