Implement basic ShowItemInFolder for linux....

chrome/common/platform_util_linux.cc

+// 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.
+
+#include "chrome/common/platform_util.h"
+
+#include "base/file_path.h"
+#include "base/file_util.h"
+#include "base/process_util.h"
+
+namespace platform_util {
+
+// TODO(estade): It would be nice to be able to select the file in the file
+// manager, but that probably requires extending xdg-open. For now just
+// show the folder.
+void ShowItemInFolder(const FilePath& full_path) {
+  FilePath dir = full_path.DirName();
+  if (!file_util::DirectoryExists(dir))
+    return;
+
+  std::vector<std::string> argv;
+  argv.push_back("xdg-open");
+  argv.push_back(dir.value());
+  base::file_handle_mapping_vector no_files;
+  base::LaunchApp(argv, no_files, false, NULL);
+}
+
+}  // namespace platform_util