Refactor ShellWindow to separate platform-specific code.

chrome/browser/ui/views/select_file_dialog_extension.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/views/select_file_dialog_extension.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
@@ skipping 264 matching lines @@
     // window.
     std::vector<Profile*> profiles =
         g_browser_process->profile_manager()->GetLoadedProfiles();
     for (std::vector<Profile*>::const_iterator i(profiles.begin());
          i < profiles.end(); ++i) {
       ShellWindowRegistry* registry = ShellWindowRegistry::Get(*i);
       DCHECK(registry);
       ShellWindow* shell_window = registry->GetShellWindowForNativeWindow(
           owner_window);
       if (shell_window) {
-        base_window = shell_window;
+        base_window = shell_window->GetBaseWindow();
         tab = shell_window->tab_contents();
         profile_ = *i;
         break;
       }
     }
   }
 
   if (!base_window) {
     NOTREACHED() << "Can't find owning window.";
     return;
@@ skipping 44 matching lines @@
                                  kFileManagerMinimumHeight);
 
   // Connect our listener to FileDialogFunction's per-tab callbacks.
   AddPending(tab_id);
 
   extension_dialog_ = dialog;
   params_ = params;
   tab_id_ = tab_id;
   owner_window_ = owner_window;
 }