Use a valid /prefetch argument when launching a process.

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 21 matching lines @@
 #include "chrome/app/chrome_watcher_client_win.h"
 #include "chrome/app/chrome_watcher_command_line_win.h"
 #include "chrome/app/file_pre_reader_win.h"
 #include "chrome/app/kasko_client.h"
 #include "chrome/chrome_watcher/chrome_watcher_main_api.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_result_codes.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/env_vars.h"
-#include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/google_update_constants.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "chrome/installer/util/install_util.h"
 #include "chrome/installer/util/module_util_win.h"
 #include "chrome/installer/util/util_constants.h"
 #include "components/crash/content/app/crash_reporter_client.h"
 #include "components/crash/content/app/crashpad.h"
 #include "components/startup_metric_utils/common/pre_read_field_trial_utils_win.h"
 #include "content/public/app/sandbox_helper_win.h"
 #include "content/public/common/content_switches.h"
 #include "sandbox/win/src/sandbox.h"
 
 namespace {
 // The entry point signature of chrome.dll.
 typedef int (*DLL_MAIN)(HINSTANCE, sandbox::SandboxInterfaceInfo*);
 
 typedef void (*RelaunchChromeBrowserWithNewCommandLineIfNeededFunc)();
 
 // 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.
-  startup_metric_utils::InitializePreReadOptions(
-      BrowserDistribution::GetDistribution()->GetRegistryPath());
   const startup_metric_utils::PreReadOptions pre_read_options =
       startup_metric_utils::GetPreReadOptions();
 
   // Pre-read the binary to warm the memory caches (avoids a lot of random IO).
-  if (!pre_read_options.no_pre_read) {
+  if (pre_read_options.pre_read) {
     base::ThreadPriority previous_priority = base::ThreadPriority::NORMAL;
     if (pre_read_options.high_priority) {
       previous_priority = base::PlatformThread::GetCurrentThreadPriority();
       base::PlatformThread::SetCurrentThreadPriority(
           base::ThreadPriority::DISPLAY);
     }
 
     if (pre_read_options.only_if_cold) {
       base::MemoryMappedFile module_memory_map;
       const bool map_initialize_success = module_memory_map.Initialize(module);
@@ skipping 302 matching lines @@
   }
 };
 
 MainDllLoader* MakeMainDllLoader() {
 #if defined(GOOGLE_CHROME_BUILD)
   return new ChromeDllLoader();
 #else
   return new ChromiumDllLoader();
 #endif
 }