[Payments] Have an observer for canMakePayment, for testing.

chrome/browser/ui/views/payments/payment_request_browsertest_base.h

 // Copyright 2017 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 CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_
 #define CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/views/payments/payment_request_dialog_view.h"
 #include "chrome/browser/ui/views/payments/test_chrome_payment_request_delegate.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "components/autofill/core/browser/field_types.h"
 #include "components/autofill/core/browser/personal_data_manager_observer.h"
+#include "components/payments/content/payment_request.h"
 #include "components/payments/content/payment_request.mojom.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace autofill {
 class AutofillProfile;
 class CreditCard;
 }
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 namespace views {
 class Widget;
 }
 
 namespace payments {
 
 enum class DialogViewID;
-class PaymentRequest;
 
 ACTION_P(QuitMessageLoop, loop) {
   loop->Quit();
 }
 
 class PersonalDataLoadedObserverMock
     : public autofill::PersonalDataManagerObserver {
  public:
   PersonalDataLoadedObserverMock();
   ~PersonalDataLoadedObserverMock() override;
 
   MOCK_METHOD0(OnPersonalDataChanged, void());
 };
 
 // Base class for any interactive PaymentRequest test that will need to open
 // the UI and interact with it.
 class PaymentRequestBrowserTestBase
     : public InProcessBrowserTest,
+      public PaymentRequest::ObserverForTest,
       public PaymentRequestDialogView::ObserverForTest,
       public views::WidgetObserver {
  protected:
   // Test will open a browser window to |test_file_path| (relative to
   // chrome/test/data/payments).
   explicit PaymentRequestBrowserTestBase(const std::string& test_file_path);
   ~PaymentRequestBrowserTestBase() override;
 
   void SetUpCommandLine(base::CommandLine* command_line) override;
   void SetUpOnMainThread() override;
 
   void SetIncognitoForTesting();
 
-  // PaymentRequestDialogView::ObserverForTest
+  // PaymentRequest::ObserverForTest:
+  void OnCanMakePaymentCalled() override;
+
+  // PaymentRequestDialogView::ObserverForTest:
   void OnDialogOpened() override;
   void OnOrderSummaryOpened() override;
   void OnPaymentMethodOpened() override;
   void OnShippingSectionOpened() override;
   void OnCreditCardEditorOpened() override;
   void OnShippingAddressEditorOpened() override;
   void OnBackNavigation() override;
   void OnContactInfoOpened() override;
   void OnEditorViewUpdated() override;
 
@@ skipping 73 matching lines @@
     DIALOG_OPENED,
     DIALOG_CLOSED,
     ORDER_SUMMARY_OPENED,
     PAYMENT_METHOD_OPENED,
     SHIPPING_SECTION_OPENED,
     CREDIT_CARD_EDITOR_OPENED,
     SHIPPING_ADDRESS_EDITOR_OPENED,
     BACK_NAVIGATION,
     CONTACT_INFO_OPENED,
     EDITOR_VIEW_UPDATED,
+    CAN_MAKE_PAYMENT_CALLED,
   };
 
   // DialogEventObserver is used to wait on specific events that may have
   // occured before the call to Wait(), or after, in which case a RunLoop is
   // used.
   //
   // Usage:
   // observer_.reset(new DialogEventObserver([DialogEvent]));
   //
   // Do stuff, which (a)synchronously calls observer_->Observe([DialogEvent]).
@@ skipping 32 matching lines @@
   // Weak, owned by the PaymentRequest object.
   TestChromePaymentRequestDelegate* delegate_;
   bool incognito_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestBrowserTestBase);
 };
 
 }  // namespace payments
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PAYMENTS_PAYMENT_REQUEST_BROWSERTEST_BASE_H_