[Refactor] Move creating a browser if necessary to ExtensionInstallDialogView

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

 // Copyright 2013 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/windowed_install_dialog_controller.h"
 
 #include "base/run_loop.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/ui/browser.h"
 #import "chrome/browser/ui/cocoa/extensions/extension_install_prompt_test_utils.h"
@@ skipping 19 matching lines @@
 typedef InProcessBrowserTest WindowedInstallDialogControllerBrowserTest;
 
 }  // namespace
 
 // Test for showing an extension install prompt with no parent WebContents.
 IN_PROC_BROWSER_TEST_F(WindowedInstallDialogControllerBrowserTest,
                        ShowInstallDialog) {
   // Construct a prompt with a NULL parent window, the way ExtensionEnableFlow
   // will for the Mac app list. For testing, sets a NULL PageNavigator as well.
   scoped_ptr<ExtensionInstallPrompt> prompt(
-      new ExtensionInstallPrompt(browser()->profile(), NULL, NULL));
+      new ExtensionInstallPrompt(browser()->profile(), NULL));
 
   WindowedInstallDialogController* controller = NULL;
   chrome::MockExtensionInstallPromptDelegate delegate;
   scoped_refptr<extensions::Extension> extension =
       chrome::LoadInstallPromptExtension("permissions", "many-apis.json");
   prompt->ConfirmInstall(
       &delegate,
       extension.get(),
       base::Bind(&TestingShowAppListInstallDialogController, &controller));
 
   // The prompt needs to load the image, which happens on the blocking pool.
   content::RunAllBlockingPoolTasksUntilIdle();
   ASSERT_TRUE(controller);
 
   base::scoped_nsobject<NSWindow> window(
       [[[controller->GetViewController() view] window] retain]);
   EXPECT_TRUE([window isVisible]);
   EXPECT_TRUE([window delegate]);
   EXPECT_EQ(0, delegate.abort_count());
 
   // Press cancel to close the window.
   [[controller->GetViewController() cancelButton] performClick:nil];
   EXPECT_FALSE([window delegate]);
   EXPECT_EQ(1, delegate.abort_count());
 
   // Ensure the window is closed.
   EXPECT_FALSE([window isVisible]);
 }