[Extensions] Migrate ExtensionInstallPrompt::Delegate to be a callback

chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller_browsertest.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller.h"
 
 #include "chrome/browser/extensions/extension_install_prompt_show_params.h"
+#include "chrome/browser/extensions/extension_install_prompt_test_helper.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h"
 #import "chrome/browser/ui/cocoa/extensions/extension_install_prompt_test_utils.h"
 #import "chrome/browser/ui/cocoa/extensions/extension_install_view_controller.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "extensions/common/extension.h"
 
 using extensions::Extension;
 
 class ExtensionInstallDialogControllerTest : public InProcessBrowserTest {
 public:
   ExtensionInstallDialogControllerTest() {}
 
   void SetUpOnMainThread() override {
     extension_ = chrome::LoadInstallPromptExtension();
   }
 
  protected:
   scoped_refptr<Extension> extension_;
 };
 
 IN_PROC_BROWSER_TEST_F(ExtensionInstallDialogControllerTest, BasicTest) {
   content::WebContents* tab = browser()->tab_strip_model()->GetWebContentsAt(0);
   ExtensionInstallPromptShowParams show_params(tab);
 
-  chrome::MockExtensionInstallPromptDelegate delegate;
+  ExtensionInstallPromptTestHelper test_helper;
   scoped_ptr<ExtensionInstallPrompt::Prompt> prompt =
       chrome::BuildExtensionInstallPrompt(extension_.get());
 
   ExtensionInstallDialogController* controller =
-      new ExtensionInstallDialogController(&show_params, &delegate,
+      new ExtensionInstallDialogController(&show_params,
+                                           test_helper.GetCallback(),
                                            prompt.Pass());
 
   base::scoped_nsobject<NSWindow> window(
       [[[controller->view_controller() view] window] retain]);
   EXPECT_TRUE([window isVisible]);
 
-  // Press cancel to close the window
+  // Press cancel to close the window.
   [[controller->view_controller() cancelButton] performClick:nil];
 
   // Wait for the window to finish closing.
   EXPECT_FALSE([window isVisible]);
+
+  EXPECT_EQ(ExtensionInstallPrompt::Result::USER_CANCELED,
+            test_helper.result());
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionInstallDialogControllerTest,
                        DISABLED_Permissions) {
   content::WebContents* tab = browser()->tab_strip_model()->GetWebContentsAt(0);
   ExtensionInstallPromptShowParams show_params(tab);
 
-  chrome::MockExtensionInstallPromptDelegate delegate;
+  ExtensionInstallPromptTestHelper test_helper;
   scoped_ptr<ExtensionInstallPrompt::Prompt> prompt =
       chrome::BuildExtensionPostInstallPermissionsPrompt(extension_.get());
 
   ExtensionInstallDialogController* controller =
-      new ExtensionInstallDialogController(&show_params, &delegate,
+      new ExtensionInstallDialogController(&show_params,
+                                           test_helper.GetCallback(),
                                            prompt.Pass());
 
   base::scoped_nsobject<NSWindow> window(
       [[[controller->view_controller() view] window] retain]);
   EXPECT_TRUE([window isVisible]);
 
-  // Press cancel to close the window
+  // Press cancel to close the window.
   [[controller->view_controller() cancelButton] performClick:nil];
 
   // Wait for the window to finish closing.
   EXPECT_FALSE([window isVisible]);
+
+  EXPECT_EQ(ExtensionInstallPrompt::Result::USER_CANCELED,
+            test_helper.result());
 }