Fixit: Remove bunch of coverity warnings from chrome/installer/*.

chrome/installer/util/create_reg_key_work_item.cc

Index: chrome/installer/util/create_reg_key_work_item.cc
diff --git a/chrome/installer/util/create_reg_key_work_item.cc b/chrome/installer/util/create_reg_key_work_item.cc
index 78536de208c429267722b89512002863c1c03c38..a2a526bf9eeb57685035ed2928414c9586aa2d2a 100644
--- a/chrome/installer/util/create_reg_key_work_item.cc
+++ b/chrome/installer/util/create_reg_key_work_item.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -14,7 +14,7 @@ CreateRegKeyWorkItem::~CreateRegKeyWorkItem() {
 }
 
 CreateRegKeyWorkItem::CreateRegKeyWorkItem(HKEY predefined_root,
-                                           std::wstring path)
+                                           const std::wstring& path)
     : predefined_root_(predefined_root),
       path_(path),
       key_created_(false) {