Introduce incognito preference settings.

chrome/browser/ui/cocoa/browser_window_controller_unittest.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_unittest.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_unittest.mm b/chrome/browser/ui/cocoa/browser_window_controller_unittest.mm
index e0a9eddd3ef6aee6783e1132777e5af9405a8388..497967ba90de936039cc48b15d28b800b777b979 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_unittest.mm
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -85,14 +85,20 @@ TEST_F(BrowserWindowControllerTest, TestSaveWindowPosition) {
   ASSERT_TRUE(prefs != NULL);
 
   // Check to make sure there is no existing pref for window placement.
-  ASSERT_TRUE(prefs->GetDictionary(prefs::kBrowserWindowPlacement) == NULL);
+  const DictionaryValue* browser_window_placement =
+      prefs->GetDictionary(prefs::kBrowserWindowPlacement);
+  ASSERT_TRUE(browser_window_placement);
+  EXPECT_TRUE(browser_window_placement->empty());
 
   // Ask the window to save its position, then check that a preference
   // exists.  We're technically passing in a pointer to the user prefs
   // and not the local state prefs, but a PrefService* is a
   // PrefService*, and this is a unittest.
   [controller_ saveWindowPositionToPrefs:prefs];
-  EXPECT_TRUE(prefs->GetDictionary(prefs::kBrowserWindowPlacement) != NULL);
+  browser_window_placement =
+      prefs->GetDictionary(prefs::kBrowserWindowPlacement);
+  ASSERT_TRUE(browser_window_placement);
+  EXPECT_FALSE(browser_window_placement->empty());
 }
 
 TEST_F(BrowserWindowControllerTest, TestFullScreenWindow) {