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

content/public/browser/content_browser_client.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 754 matching lines @@
   // Returns the AppContainer SID for the specified sandboxed process type, or
   // empty string if this sandboxed process type does not support living inside
   // an AppContainer.
   virtual base::string16 GetAppContainerSidForSandboxType(
       int sandbox_type) const;
 
   // Returns whether the Win32k lockdown process mitigation should be applied to
   // a process hosting a plugin with the specified |mime_type|.
   virtual bool IsWin32kLockdownEnabledForMimeType(
       const std::string& mime_type) const;
-
-  // Returns true if processes should be launched with a /prefetch:# argument.
-  // See the kPrefetchArgument* constants in content_switches.cc for details.
-  virtual bool ShouldUseWindowsPrefetchArgument() const;
 #endif
 
 #if defined(VIDEO_HOLE)
   // Allows an embedder to provide its own ExternalVideoSurfaceContainer
   // implementation.  Return nullptr to disable external surface video.
   virtual ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(WebContents* web_contents);
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_