Revert of Replace --ppapi-keep-alive-throttle command line switch with IPC parameter.

components/nacl/browser/nacl_process_host.cc

Index: components/nacl/browser/nacl_process_host.cc
diff --git a/components/nacl/browser/nacl_process_host.cc b/components/nacl/browser/nacl_process_host.cc
index b8bb6bde096ad30a31403ccfc218bd64b30ed20a..b16b6d86c1fac28c75b4686fb88c16954a6155ba 100644
--- a/components/nacl/browser/nacl_process_host.cc
+++ b/components/nacl/browser/nacl_process_host.cc
@@ -48,11 +48,10 @@
 #include "ppapi/host/host_factory.h"
 #include "ppapi/host/ppapi_host.h"
 #include "ppapi/proxy/ppapi_messages.h"
-#include "ppapi/shared_impl/ppapi_constants.h"
 #include "ppapi/shared_impl/ppapi_nacl_plugin_args.h"
+#include "ppapi/shared_impl/ppapi_switches.h"
 
 #if defined(OS_POSIX)
-
 #include <fcntl.h>
 
 #include "ipc/ipc_channel_posix.h"
@@ -233,9 +232,6 @@
 };
 
 // -----------------------------------------------------------------------------
-
-unsigned NaClProcessHost::keepalive_throttle_interval_milliseconds_ =
-    ppapi::kKeepaliveThrottleIntervalDefaultMilliseconds;
 
 NaClProcessHost::NaClProcessHost(const GURL& manifest_url,
                                  int render_view_id,
@@ -358,12 +354,6 @@
   NaClBrowser::GetDelegate()->SetDebugPatterns(nacl_debug_mask);
 }
 
-// static
-void NaClProcessHost::SetPpapiKeepAliveThrottleForTesting(
-    unsigned milliseconds) {
-  keepalive_throttle_interval_milliseconds_ = milliseconds;
-}
-
 void NaClProcessHost::Launch(
     NaClHostMessageFilter* nacl_host_message_filter,
     IPC::Message* reply_msg,
@@ -868,11 +858,10 @@
     ppapi::PpapiNaClPluginArgs args;
     args.off_the_record = nacl_host_message_filter_->off_the_record();
     args.permissions = permissions_;
-    args.keepalive_throttle_interval_milliseconds =
-        keepalive_throttle_interval_milliseconds_;
     CommandLine* cmdline = CommandLine::ForCurrentProcess();
     DCHECK(cmdline);
     std::string flag_whitelist[] = {
+      switches::kPpapiKeepAliveThrottle,
       switches::kV,
       switches::kVModule,
     };