Introduce incognito preference settings.

chrome/browser/ui/cocoa/window_size_autosaver_unittest.mm

-// Copyright (c) 2009 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.
 
 #import <Cocoa/Cocoa.h>
 
 #import "chrome/browser/ui/cocoa/window_size_autosaver.h"
 
 #include "base/scoped_nsobject.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/ui/cocoa/browser_test_helper.h"
@@ skipping 25 matching lines @@
   BrowserTestHelper browser_helper_;
   NSWindow* window_;
   const char* path_;
 };
 
 TEST_F(WindowSizeAutosaverTest, RestoresAndSavesPos) {
   PrefService* pref = browser_helper_.profile()->GetPrefs();
   ASSERT_TRUE(pref != NULL);
 
   // Check to make sure there is no existing pref for window placement.
-  ASSERT_TRUE(pref->GetDictionary(path_) == NULL);
+  const DictionaryValue* placement = pref->GetDictionary(path_);
+  ASSERT_TRUE(placement);
+  EXPECT_TRUE(placement->empty());
 
   // Replace the window with one that doesn't have resize controls.
   [window_ close];
   window_ =
       [[NSWindow alloc] initWithContentRect:NSMakeRect(100, 101, 150, 151)
                                   styleMask:NSTitledWindowMask
                                     backing:NSBackingStoreBuffered
                                       defer:NO];
 
   // Ask the window to save its position, then check that a preference
@@ skipping 44 matching lines @@
   ASSERT_TRUE(windowPref->GetInteger("y", &y));
   EXPECT_EQ(300, x);
   EXPECT_EQ(310, y);
 }
 
 TEST_F(WindowSizeAutosaverTest, RestoresAndSavesRect) {
   PrefService* pref = browser_helper_.profile()->GetPrefs();
   ASSERT_TRUE(pref != NULL);
 
   // Check to make sure there is no existing pref for window placement.
-  ASSERT_TRUE(pref->GetDictionary(path_) == NULL);
+  const DictionaryValue* placement = pref->GetDictionary(path_);
+  ASSERT_TRUE(placement);
+  EXPECT_TRUE(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.
 
   {
     NSRect frame = [window_ frame];
     // Empty state, shouldn't restore:
     scoped_nsobject<WindowSizeAutosaver> sizeSaver([[WindowSizeAutosaver alloc]
@@ skipping 69 matching lines @@
   int x1, y1, x2, y2;
   EXPECT_FALSE(windowPref->GetInteger("x", &x1));
   EXPECT_FALSE(windowPref->GetInteger("y", &x1));
   ASSERT_FALSE(windowPref->GetInteger("left", &x1));
   ASSERT_FALSE(windowPref->GetInteger("right", &x2));
   ASSERT_FALSE(windowPref->GetInteger("top", &y1));
   ASSERT_FALSE(windowPref->GetInteger("bottom", &y2));
 }
 
 }  // namespace