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

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

Index: chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller_browsertest.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller_browsertest.mm b/chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller_browsertest.mm
index 756ef9025b4d7c759501fa790520bb761069cdcb..2e069dd42d362bb6f51e7594aea724dc2697cbb5 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller_browsertest.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_install_dialog_controller_browsertest.mm
@@ -5,6 +5,7 @@
 #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"
@@ -31,23 +32,27 @@ 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,
@@ -55,21 +60,25 @@ IN_PROC_BROWSER_TEST_F(ExtensionInstallDialogControllerTest,
   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());
 }