[Mac]Port browser_keyevents_browsertest.cc and browser_focus_uitest.cc to Mac.

chrome/test/ui_test_utils.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_TEST_UI_TEST_UTILS_H_
 #define CHROME_TEST_UI_TEST_UTILS_H_
 
 #include <map>
 #include <string>
 #include <set>
 
+#include "gfx/native_widget_types.h"
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
 #include "base/string16.h"
 #include "chrome/browser/view_ids.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "chrome/common/notification_type.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/test/automation/dom_element_proxy.h"
@@ skipping 387 matching lines @@
     details_[Source<T>(source).ptr()] = *Details<U>(details).ptr();
     WindowedNotificationObserver<T>::Observe(type, source, details);
   }
 
  private:
   std::map<T*, U> details_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowedNotificationObserverWithDetails);
 };
 
+// Hide a native window.
+void HideNativeWindow(gfx::NativeWindow window);
+
+// Show and focus a native window.
+void ShowAndFocusNativeWindow(gfx::NativeWindow window);
+
 }  // namespace ui_test_utils
 
 #endif  // CHROME_TEST_UI_TEST_UTILS_H_