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

content/browser/ppapi_plugin_process_host.cc

Index: content/browser/ppapi_plugin_process_host.cc
diff --git a/content/browser/ppapi_plugin_process_host.cc b/content/browser/ppapi_plugin_process_host.cc
index 0d8d1708f9d67e61f29b968c241e018570ae4743..c681610bf2ab4843dd8b581a32e853c1df2a1791 100644
--- a/content/browser/ppapi_plugin_process_host.cc
+++ b/content/browser/ppapi_plugin_process_host.cc
@@ -406,10 +406,8 @@ bool PpapiPluginProcessHost::Init(const PepperPluginInfo& info) {
   cmd_line->AppendSwitchASCII(switches::kMojoChannelToken, mojo_channel_token);
 
 #if defined(OS_WIN)
-  if (GetContentClient()->browser()->ShouldUseWindowsPrefetchArgument()) {
-    cmd_line->AppendArg(is_broker_ ? switches::kPrefetchArgumentPpapiBroker
-                                   : switches::kPrefetchArgumentPpapi);
-  }
+  cmd_line->AppendArg(is_broker_ ? switches::kPrefetchArgumentPpapiBroker
+                                 : switches::kPrefetchArgumentPpapi);
 #endif  // defined(OS_WIN)
 
   // These switches are forwarded to both plugin and broker pocesses.