Use a valid /prefetch argument when launching a process.

chrome/chrome_exe.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //chrome
       'target_name': 'chrome',
       'type': 'none',
@@ skipping 57 matching lines @@
         'app/chrome_exe_main_win.cc',
         'app/chrome_exe_resource.h',
         'app/chrome_watcher_client_win.cc',
         'app/chrome_watcher_client_win.h',
         'app/chrome_watcher_command_line_win.cc',
         'app/chrome_watcher_command_line_win.h',
         'app/kasko_client.cc',
         'app/kasko_client.h',
         'app/main_dll_loader_win.cc',
         'app/main_dll_loader_win.h',
+        'app/prefetch_argument_win.cc',
+        'app/prefetch_argument_win.h',
       ],
       'mac_bundle_resources': [
         'app/app-Info.plist',
       ],
       # TODO(mark): Come up with a fancier way to do this.  It should only
       # be necessary to list app-Info.plist once, not the three times it is
       # listed here.
       'mac_bundle_resources!': [
         'app/app-Info.plist',
       ],
@@ skipping 531 matching lines @@
               'dependencies': [
                 'chrome_nacl_win64',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }