Use a valid /prefetch argument when launching a process.

content/common/sandbox_win.cc

Index: content/common/sandbox_win.cc
diff --git a/content/common/sandbox_win.cc b/content/common/sandbox_win.cc
index 523073863b7c667862146a9fe0d102bcafc3585d..92a5a241f5748d803a370d39bf7f46213cc4d1bc 100644
--- a/content/common/sandbox_win.cc
+++ b/content/common/sandbox_win.cc
@@ -681,11 +681,6 @@ base::Process StartSandboxedProcess(
 
   ProcessDebugFlags(cmd_line);
 
-  // Prefetch hints on windows:
-  // Using a different prefetch profile per process type will allow Windows
-  // to create separate pretetch settings for browser, renderer etc.
-  cmd_line->AppendArg(base::StringPrintf("/prefetch:%d", base::Hash(type_str)));
-
   if ((!delegate->ShouldSandbox()) ||
       browser_command_line.HasSwitch(switches::kNoSandbox) ||
       cmd_line->HasSwitch(switches::kNoSandbox)) {