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

content/browser/browser_child_process_host_impl.h

Index: content/browser/browser_child_process_host_impl.h
===================================================================
--- content/browser/browser_child_process_host_impl.h	(revision 123165)
+++ content/browser/browser_child_process_host_impl.h	(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.
 
@@ -47,7 +47,7 @@
       const FilePath& exposed_dir,
 #elif defined(OS_POSIX)
       bool use_zygote,
-      const base::environment_vector& environ,
+      const base::EnvironmentVector& environ,
 #endif
       CommandLine* cmd_line) OVERRIDE;
   virtual const content::ChildProcessData& GetData() const OVERRIDE;