PaymentApp: Implement GetAllManifests() in PaymentAppContext.

content/browser/payments/payment_app_manager.h

 // 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_BROWSER_PAYMENTS_PAYMENT_APP_MANAGER_H_
 #define CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_MANAGER_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "components/payments/payment_app.mojom.h"
 #include "content/common/content_export.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace content {
 
 class PaymentAppContextImpl;
 
 class CONTENT_EXPORT PaymentAppManager
     : public NON_EXPORTED_BASE(payments::mojom::PaymentAppManager) {
  public:
   PaymentAppManager(
       PaymentAppContextImpl* payment_app_context,
       mojo::InterfaceRequest<payments::mojom::PaymentAppManager> request);
 
   ~PaymentAppManager() override;
 
  private:
+  friend class PaymentAppContentUnitTestBase;
   friend class PaymentAppManagerTest;
 
   // payments::mojom::PaymentAppManager methods:
   void SetManifest(const std::string& scope,
                    payments::mojom::PaymentAppManifestPtr manifest,
                    const SetManifestCallback& callback) override;
   void GetManifest(const std::string& scope,
                    const GetManifestCallback& callback) override;
 
   // Called when an error is detected on binding_.
   void OnConnectionError();
 
   // PaymentAppContextImpl owns PaymentAppManager
   PaymentAppContextImpl* payment_app_context_;
 
   mojo::Binding<payments::mojom::PaymentAppManager> binding_;
 
   base::WeakPtrFactory<PaymentAppManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentAppManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_PAYMENTS_PAYMENT_APP_MANAGER_H_