Mac Chromium style checker cleanup

ui/shell_dialogs/select_file_dialog_mac.mm

 // 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 "ui/shell_dialogs/select_file_dialog.h"
 
 #import <Cocoa/Cocoa.h>
 #include <CoreServices/CoreServices.h>
 
 #include <map>
@@ skipping 47 matching lines @@
 @end
 
 // Implementation of SelectFileDialog that shows Cocoa dialogs for choosing a
 // file or folder.
 class SelectFileDialogImpl : public ui::SelectFileDialog {
  public:
   explicit SelectFileDialogImpl(Listener* listener,
                                 ui::SelectFilePolicy* policy);
 
   // BaseShellDialog implementation.
-  virtual bool IsRunning(gfx::NativeWindow parent_window) const;
-  virtual void ListenerDestroyed();
+  virtual bool IsRunning(gfx::NativeWindow parent_window) const OVERRIDE;
+  virtual void ListenerDestroyed() OVERRIDE;
 
   // Callback from ObjC bridge.
   void FileWasSelected(NSSavePanel* dialog,
                        NSWindow* parent_window,
                        bool was_cancelled,
                        bool is_multi,
                        const std::vector<base::FilePath>& files,
                        int index);
 
   bool ShouldEnableFilename(NSSavePanel* dialog, NSString* filename);
@@ skipping 11 matching lines @@
       gfx::NativeWindow owning_window,
       void* params) OVERRIDE;
 
  private:
   virtual ~SelectFileDialogImpl();
 
   // Gets the accessory view for the save dialog.
   NSView* GetAccessoryView(const FileTypeInfo* file_types,
                            int file_type_index);
 
-  virtual bool HasMultipleFileTypeChoicesImpl();
+  virtual bool HasMultipleFileTypeChoicesImpl() OVERRIDE;
 
   // The bridge for results from Cocoa to return to us.
   scoped_nsobject<SelectFileDialogBridge> bridge_;
 
   // A map from file dialogs to the |params| user data associated with them.
   std::map<NSSavePanel*, void*> params_map_;
 
   // The set of all parent windows for which we are currently running dialogs.
   std::set<NSWindow*> parents_;
 
@@ skipping 307 matching lines @@
 
 namespace ui {
 
 SelectFileDialog* CreateMacSelectFileDialog(
     SelectFileDialog::Listener* listener,
     SelectFilePolicy* policy) {
   return new SelectFileDialogImpl(listener, policy);
 }
 
 }  // namespace ui