Cleanup: Remove base::environment_vector and base::file_handle_mapping_vector to StudlyCaps.

chrome/browser/platform_util_linux.cc

Index: chrome/browser/platform_util_linux.cc
===================================================================
--- chrome/browser/platform_util_linux.cc	(revision 123165)
+++ chrome/browser/platform_util_linux.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -20,7 +20,7 @@
   argv.push_back(util);
   argv.push_back(arg);
 
-  base::environment_vector env;
+  base::EnvironmentVector env;
   // xdg-open can fall back on mailcap which eventually might plumb through
   // to a command that needs a terminal.  Set the environment variable telling
   // it that we definitely don't have a terminal available and that it should