Always use a /prefetch:# switch when launching a process on Windows.

chrome/app/chrome_exe_main_win.cc

Index: chrome/app/chrome_exe_main_win.cc
diff --git a/chrome/app/chrome_exe_main_win.cc b/chrome/app/chrome_exe_main_win.cc
index 6eeb475d7c8fa8e7ff4eee533ea85bc1590f008c..bed0790095cb20cf540395cc59d930b705b99177 100644
--- a/chrome/app/chrome_exe_main_win.cc
+++ b/chrome/app/chrome_exe_main_win.cc
@@ -229,8 +229,7 @@ int main() {
   // except for the browser process. Any new process type will have to assign
   // itself a prefetch id. See kPrefetchArgument* constants in
   // content_switches.cc for details.
-  DCHECK(!startup_metric_utils::GetPreReadOptions().use_prefetch_argument ||
-         process_type.empty() ||
+  DCHECK(process_type.empty() ||
          HasValidWindowsPrefetchArgument(*command_line));
 
   if (process_type == crash_reporter::switches::kCrashpadHandler) {