Factor out the common parts of the about network dialog. I will be using this...

chrome/browser/views/logging_about_dialog.h

 // Copyright (c) 2009 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_BROWSER_VIEWS_ABOUT_NETWORK_DIALOG_H_
-#define CHROME_BROWSER_VIEWS_ABOUT_NETWORK_DIALOG_H_
+#ifndef CHROME_BROWSER_VIEWS_LOGGING_ABOUT_DIALOG_H_
+#define CHROME_BROWSER_VIEWS_LOGGING_ABOUT_DIALOG_H_
 
 #include "base/singleton.h"
 #include "chrome/views/base_button.h"
 #include "chrome/views/dialog_delegate.h"
 
 namespace views {
+class ColumnSet;
+class GridLayout;
 class TextButton;
 class TextField;
 }  // namespace views
 
-class AboutNetworkDialog : public views::DialogDelegate,
-                           public views::BaseButton::ButtonListener,
+// This is the base class for dialog boxes used in debugging that dump text
+// into a textbox. The derived class specifies which buttons appear at the top
+// of the dialog, this class manages the text area.
+class LoggingAboutDialog : public views::DialogDelegate,
                            public views::View {
  public:
-  // This dialog is a singleton. If the dialog is already opened, it won't do
-  // anything, so you can just blindly call this function all you want.
-  static void RunDialog();
-
-  virtual ~AboutNetworkDialog();
+  virtual ~LoggingAboutDialog();
 
   // Appends the given string to the dialog box. This is called by the job
   // tracker (see the .cc file) when "stuff happens."
   void AppendText(const std::wstring& text);
 
-  // Returns true if we're currently tracking network operations.
-  bool tracking() const { return tracking_; }
-
- private:
-  friend struct DefaultSingletonTraits<AboutNetworkDialog>;
-
-  AboutNetworkDialog();
+ protected:
+  // The derived class should be sure to call SetupControls. We don't want
+  // this class to do it becuase it calls virtual functions, and the derived
+  // class wouldn't be constructed yet.
+  LoggingAboutDialog();
 
   // Sets up all UI controls for the dialog.
   void SetupControls();
 
+  // Sets up the column set for the buttons that appears at the top of the
+  // dialog.
+  virtual void SetupButtonColumnSet(views::ColumnSet* set) = 0;
+
+  // Adds any custom buttons to the layout. This will be in the column set
+  // set up above.
+  virtual void AddButtonControlsToLayout(views::GridLayout* layout) = 0;
+
+  views::TextField* text_field() { return text_field_; }
+
+ private:
   virtual gfx::Size GetPreferredSize();
   virtual views::View* GetContentsView();
   virtual int GetDialogButtons() const;
   virtual std::wstring GetWindowTitle() const;
-  virtual void Layout();
 
   // views::WindowDelegate (via view::DialogDelegate).
   virtual bool CanResize() const;
 
-  // views::BaseButton::ButtonListener.
-  virtual void ButtonPressed(views::BaseButton* button);
-
-  views::TextButton* track_toggle_;
-  views::TextButton* show_button_;
-  views::TextButton* clear_button_;
+  // The text field that contains the log messages.
   views::TextField* text_field_;
 
-  // Set to true when we're tracking network status.
-  bool tracking_;
-
-  DISALLOW_COPY_AND_ASSIGN(AboutNetworkDialog);
+  DISALLOW_COPY_AND_ASSIGN(LoggingAboutDialog);
 };
 
-#endif  // CHROME_BROWSER_VIEWS_ABOUT_NETWORK_DIALOG_H_
+#endif  // CHROME_BROWSER_VIEWS_LOGGING_ABOUT_DIALOG_H_