Move AlterEnvironment to base/environment.h, implement on Windows.

content/browser/browser_child_process_host_impl.cc

 // 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.
 
 #include "content/browser/browser_child_process_host_impl.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 115 matching lines @@
        it != copy.end(); ++it) {
     delete (*it)->delegate();  // ~*HostDelegate deletes *HostImpl.
   }
 }
 
 void BrowserChildProcessHostImpl::Launch(
 #if defined(OS_WIN)
     SandboxedProcessLauncherDelegate* delegate,
 #elif defined(OS_POSIX)
     bool use_zygote,
-    const base::EnvironmentVector& environ,
+    const base::EnvironmentMap& environ,
 #endif
     CommandLine* cmd_line) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   GetContentClient()->browser()->AppendExtraCommandLineSwitches(
       cmd_line, data_.id);
 
   const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
   static const char* kForwardSwitches[] = {
     switches::kDisableLogging,
@@ skipping 198 matching lines @@
 
 void BrowserChildProcessHostImpl::OnProcessExitedEarly(
     base::WaitableEvent* event) {
   DeleteProcessWaitableEvent(event);
   OnChildDisconnected();
 }
 
 #endif
 
 }  // namespace content