[Mac] Properly call setIsActive() when becoming and resigning key window.

webkit/tools/test_shell/webview_host.h

 // Copyright (c) 2006-2008 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 WEBKIT_TOOLS_TEST_SHELL_WEBVIEW_HOST_H_
 #define WEBKIT_TOOLS_TEST_SHELL_WEBVIEW_HOST_H_
 
 #include <map>
 
 #include "app/gfx/native_widget_types.h"
@@ skipping 26 matching lines @@
 #if defined(OS_LINUX)
   // Create a new plugin parent container for a given plugin XID.
   void CreatePluginContainer(gfx::PluginWindowHandle id);
 
   // Destroy the plugin parent container when a plugin has been destroyed.
   void DestroyPluginContainer(gfx::PluginWindowHandle id);
 
   GtkPluginContainerManager* plugin_container_manager() {
     return &plugin_container_manager_;
   }
+#elif defined(OS_MACOSX)
+  void SetIsActive(bool active);
 #endif
 
  protected:
 #if defined(OS_WIN)
   virtual bool WndProc(UINT message, WPARAM wparam, LPARAM lparam) {
     return false;
   }
 #endif
 
 #if defined(OS_LINUX)
   // Helper class that creates and moves plugin containers.
   GtkPluginContainerManager plugin_container_manager_;
 #endif
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_WEBVIEW_HOST_H_