Add a very basic preferences window controller with unit test. Fix the prefs ...

chrome/browser/cocoa/preferences_window_controller_unittest.mm

Index: chrome/browser/cocoa/preferences_window_controller_unittest.mm
===================================================================
--- chrome/browser/cocoa/preferences_window_controller_unittest.mm	(revision 0)
+++ chrome/browser/cocoa/preferences_window_controller_unittest.mm	(revision 0)
@@ -0,0 +1,36 @@
+// Copyright (c) 2009 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 "base/scoped_nsobject.h"
+#import "chrome/browser/cocoa/preferences_window_controller.h"
+#include "chrome/browser/cocoa/browser_test_helper.h"
+#include "chrome/browser/cocoa/cocoa_test_helper.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+namespace {
+
+class PrefsControllerTest : public PlatformTest {
+ public:
+  PrefsControllerTest() {
+    PrefService* prefs = browser_helper_.profile()->GetPrefs();
+    pref_controller_.reset([[PreferencesWindowController alloc]
+                              initWithPrefs:prefs]);
+    EXPECT_TRUE(pref_controller_.get());
+  }
+
+  BrowserTestHelper browser_helper_;
+  CocoaTestHelper cocoa_helper_;  // Inits Cocoa, creates window, etc...
+  scoped_nsobject<PreferencesWindowController> pref_controller_;
+};
+
+// Test showing the preferences window and making sure it's visible
+TEST_F(PrefsControllerTest, Show) {
+  [pref_controller_ showPreferences:nil];
+  EXPECT_TRUE([[pref_controller_ window] isVisible]);
+}
+
+}  // namespace