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

content/browser/gpu/gpu_process_host.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/gpu/gpu_process_host.h"
 
 #include "base/base64.h"
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 1144 matching lines @@
 
   // If specified, prepend a launcher program to the command line.
   if (!gpu_launcher.empty())
     cmd_line->PrependWrapper(gpu_launcher);
 
   process_->Launch(
 #if defined(OS_WIN)
       new GpuSandboxedProcessLauncherDelegate(cmd_line),
 #elif defined(OS_POSIX)
       false,
-      base::EnvironmentVector(),
+      base::EnvironmentMap(),
 #endif
       cmd_line);
   process_launched_ = true;
 
   UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
                             LAUNCHED, GPU_PROCESS_LIFETIME_EVENT_MAX);
   return true;
 }
 
 void GpuProcessHost::SendOutstandingReplies() {
@@ skipping 67 matching lines @@
   TRACE_EVENT0("gpu", "GpuProcessHost::OnCacheShader");
   ClientIdToShaderCacheMap::iterator iter =
       client_id_to_shader_cache_.find(client_id);
   // If the cache doesn't exist then this is an off the record profile.
   if (iter == client_id_to_shader_cache_.end())
     return;
   iter->second->Cache(GetShaderPrefixKey() + ":" + key, shader);
 }
 
 }  // namespace content