Use a valid /prefetch argument when launching a process.

content/browser/utility_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/utility_process_host_impl.h"
 
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
@@ skipping 20 matching lines @@
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/utility_process_host_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/process_type.h"
 #include "content/public/common/sandbox_type.h"
 #include "content/public/common/sandboxed_process_launcher_delegate.h"
 #include "ipc/ipc_switches.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_WIN)
+#include "content/public/common/prefetch_argument_win.h"
 #include "sandbox/win/src/sandbox_policy.h"
 #include "sandbox/win/src/sandbox_types.h"
 #endif
 
 namespace content {
 
 // NOTE: changes to this class need to be reviewed by the security team.
 class UtilitySandboxedProcessLauncherDelegate
     : public SandboxedProcessLauncherDelegate {
  public:
@@ skipping 228 matching lines @@
 
       base::CommandLine* cmd_line = new base::CommandLine(exe_path);
     #endif
 
     cmd_line->AppendSwitchASCII(switches::kProcessType,
                                 switches::kUtilityProcess);
     cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id);
     std::string locale = GetContentClient()->browser()->GetApplicationLocale();
     cmd_line->AppendSwitchASCII(switches::kLang, locale);
 
+#if defined(OS_WIN)
+    AddWindowsPrefetchArgument(PREFETCH_ID_DEFAULT, cmd_line);
+#endif  // defined(OS_WIN)
+
     if (no_sandbox_)
       cmd_line->AppendSwitch(switches::kNoSandbox);
 
     // Browser command-line switches to propagate to the utility process.
     static const char* const kSwitchNames[] = {
       switches::kDebugPluginLoading,
       switches::kNoSandbox,
       switches::kProfilerTiming,
 #if defined(OS_MACOSX)
       switches::kEnableSandboxLogging,
@@ skipping 72 matching lines @@
     if (RenderProcessHost::run_renderer_in_process())
       handle = base::GetCurrentProcessHandle();
     else
       handle = process_->GetData().handle;
 
     mojo_application_host_->Activate(this, handle);
   }
 }
 
 }  // namespace content