Consolidate Browser Creation.

chrome/browser/ui/cocoa/extensions/extension_installed_bubble_controller_unittest.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 <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 31 matching lines @@
 @end
 
 namespace keys = extension_manifest_keys;
 
 class ExtensionInstalledBubbleControllerTest : public CocoaProfileTest {
 
  public:
   virtual void SetUp() {
     CocoaProfileTest::SetUp();
     ASSERT_TRUE(browser());
-    window_ = CreateBrowserWindow()->GetNativeWindow();
+    window_ = browser()->window()->GetNativeWindow();
     icon_ = LoadTestIcon();
   }
 
   // Load test icon from extension test directory.
   SkBitmap LoadTestIcon() {
     FilePath path;
     PathService::Get(chrome::DIR_TEST_DATA, &path);
     path = path.AppendASCII("extensions").AppendASCII("icon1.png");
 
     std::string file_contents;
@@ skipping 160 matching lines @@
   // The bubble window goes from visible to not-visible.
   EXPECT_TRUE([bubbleWindow isVisible]);
   [window_ close];
   EXPECT_FALSE([bubbleWindow isVisible]);
 
   [[NSNotificationCenter defaultCenter] removeObserver:observer];
 
   // Check that the appropriate notification was received.
   EXPECT_OCMOCK_VERIFY(observer);
 }