Report text output and exit code for command-line operations.

chrome/browser/chrome_process_singleton.h

Index: chrome/browser/chrome_process_singleton.h
diff --git a/chrome/browser/chrome_process_singleton.h b/chrome/browser/chrome_process_singleton.h
index c4ca2c90c802525033768317b55bf81193a40779..db46d37123f322c65d93b7320b06417c680b6ccc 100644
--- a/chrome/browser/chrome_process_singleton.h
+++ b/chrome/browser/chrome_process_singleton.h
@@ -28,13 +28,18 @@
 //    flashed (using ::SetForegroundWindow on Windows).
 class ChromeProcessSingleton {
  public:
+  typedef base::Callback<bool(const CommandLine& command_line,
+                              const base::FilePath& current_directory,
+                              scoped_ptr<OperationOutput> operation_output)>
+      NotificationCallback;
+
   ChromeProcessSingleton(
       const base::FilePath& user_data_dir,
-      const ProcessSingleton::NotificationCallback& notification_callback);
+      const NotificationCallback& notification_callback);
 
   ChromeProcessSingleton(
       const base::FilePath& user_data_dir,
-      const ProcessSingleton::NotificationCallback& notification_callback,
+      const NotificationCallback& notification_callback,
       const ProcessSingletonModalDialogLock::SetForegroundWindowHandler&
           set_foreground_window_handler);