Make messages in javascript's alert copyable....

chrome/views/controls/message_box_view.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 CHROME_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_VIEW_H_
 #define CHROME_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_VIEW_H_
 
 #include <string>
 
 #include "base/task.h"
@@ skipping 41 matching lines @@
 
   // Sets the state of the check-box.
   void SetCheckBoxSelected(bool selected);
 
  protected:
   // Layout and Painting functions.
   virtual void ViewHierarchyChanged(bool is_add,
                                     views::View* parent,
                                     views::View* child);
 
+  // Handles Ctrl-C and writes the message in the system clipboard.
+  virtual bool AcceleratorPressed(const views::Accelerator& accelerator);
+
  private:
   // Sets up the layout manager and initializes the prompt field. This should
   // only be called once, from the constructor.
   void Init(int dialog_flags, const std::wstring& default_prompt);
 
   // Sets up the layout manager based on currently initialized views. Should be
   // called when a view is initialized or changed.
   void ResetLayoutManager();
 
   // Message for the message box.
@@ skipping 10 matching lines @@
 
   // Maximum width of the message label.
   int message_width_;
 
   ScopedRunnableMethodFactory<MessageBoxView> focus_grabber_factory_;
 
   DISALLOW_EVIL_CONSTRUCTORS(MessageBoxView);
 };
 
 #endif  // CHROME_VIEWS_CONTROLS_MESSAGE_BOX_VIEW_VIEW_H_