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

chrome/browser/operation_output.cc

+// Copyright (c) 2013 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 "chrome/browser/operation_output.h"
+
+#include "base/logging.h"
+
+#if !defined(OS_WIN)
+// static
+scoped_ptr<OperationOutput> OperationOutput::Create(
+    const CommandLine& command_line) {
+  return scoped_ptr<OperationOutput>();
+}
+#endif  // !defined(OS_WIN)
+
+// static
+bool OperationOutput::Complete(scoped_ptr<OperationOutput> operation_output,
+                               unsigned int exit_code) {
+  if (operation_output)
+    return operation_output->SetExitCode(exit_code);
+
+  NOTREACHED();
+  return false;
+}