Improve the UI for handling profile lock contention.

chrome/browser/ui/gtk/process_singleton_dialog.h

 // Copyright (c) 2011 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_UI_GTK_PROCESS_SINGLETON_DIALOG_H_
 #define CHROME_BROWSER_UI_GTK_PROCESS_SINGLETON_DIALOG_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/files/file_path.h"
 #include "ui/base/gtk/gtk_signal.h"
 
 typedef struct _GtkWidget GtkWidget;
 
 // Displays an error to the user when the ProcessSingleton cannot acquire the
 // lock.  This runs the message loop itself as the browser message loop has not
 // started by that point in the startup process.
 class ProcessSingletonDialog {
  public:
   // Shows the dialog, and returns once the dialog has been closed.
-  static void ShowAndRun(const std::string& message);
+  static bool ShowAndRun(const std::string& message,
+                         const std::string& relaunch_text);
+
+  int GetResponseId() const { return response_id_; }
 
  private:
-  explicit ProcessSingletonDialog(const std::string& message);
+  ProcessSingletonDialog(const std::string& message,
+                         const std::string& relaunch_text);
 
   CHROMEGTK_CALLBACK_1(ProcessSingletonDialog, void, OnResponse, int);
 
   GtkWidget* dialog_;
+  int response_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessSingletonDialog);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_PROCESS_SINGLETON_DIALOG_H_