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

chrome/browser/process_info_snapshot_mac_unittest.cc

Index: chrome/browser/process_info_snapshot_mac_unittest.cc
===================================================================
--- chrome/browser/process_info_snapshot_mac_unittest.cc	(revision 123165)
+++ chrome/browser/process_info_snapshot_mac_unittest.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.
 
@@ -99,7 +99,7 @@
   // Create a pipe to be able to read top's output.
   int fds[2];
   PCHECK(pipe(fds) == 0);
-  base::file_handle_mapping_vector fds_to_remap;
+  base::FileHandleMappingVector fds_to_remap;
   fds_to_remap.push_back(std::make_pair(fds[1], 1));
 
   // Hook up top's stderr to the test process' stderr.