Use valid /prefetch arguments for process launches on Windows. - do not submit

chrome/app/main_dll_loader_win.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 <windows.h>  // NOLINT
 #include <shlwapi.h>  // NOLINT
 #include <stddef.h>
 #include <userenv.h>  // NOLINT
 
 #include "chrome/app/main_dll_loader_win.h"
@@ skipping 50 matching lines @@
 // Loads |module| after setting the CWD to |module|'s directory. Returns a
 // reference to the loaded module on success, or null on error.
 HMODULE LoadModuleWithDirectory(const base::FilePath& module) {
   ::SetCurrentDirectoryW(module.DirName().value().c_str());
 
   // Get pre-read options from the PreRead field trial.
   bool trial_no_pre_read = false;
   bool trial_high_priority = false;
   bool trial_only_if_cold = false;
   bool trial_prefetch_virtual_memory = false;
+  bool ignored;
   startup_metric_utils::GetPreReadOptions(
       BrowserDistribution::GetDistribution()->GetRegistryPath(),
       &trial_no_pre_read, &trial_high_priority, &trial_only_if_cold,
-      &trial_prefetch_virtual_memory);
+      &trial_prefetch_virtual_memory, &ignored);
 
   // Pre-read the binary to warm the memory caches (avoids a lot of random IO).
   if (!trial_no_pre_read) {
     base::ThreadPriority previous_priority = base::ThreadPriority::NORMAL;
     if (trial_high_priority) {
       previous_priority = base::PlatformThread::GetCurrentThreadPriority();
       base::PlatformThread::SetCurrentThreadPriority(
           base::ThreadPriority::DISPLAY);
     }
 
@@ skipping 305 matching lines @@
   }
 };
 
 MainDllLoader* MakeMainDllLoader() {
 #if defined(GOOGLE_CHROME_BUILD)
   return new ChromeDllLoader();
 #else
   return new ChromiumDllLoader();
 #endif
 }