Revert of Test Keeping NaCl plugins used in app background pages alive when active.

ppapi/proxy/plugin_main_nacl.cc

Index: ppapi/proxy/plugin_main_nacl.cc
diff --git a/ppapi/proxy/plugin_main_nacl.cc b/ppapi/proxy/plugin_main_nacl.cc
index 6690f2059cba8ee6f3e1dd6e73adf8ced9617b08..bced1083f0d53bcc310c187c24f5ed6d00702640 100644
--- a/ppapi/proxy/plugin_main_nacl.cc
+++ b/ppapi/proxy/plugin_main_nacl.cc
@@ -13,7 +13,6 @@
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
-#include "base/strings/string_number_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "components/tracing/child_trace_message_filter.h"
@@ -30,7 +29,6 @@
 #include "ppapi/proxy/plugin_message_filter.h"
 #include "ppapi/proxy/plugin_proxy_delegate.h"
 #include "ppapi/proxy/resource_reply_thread_registrar.h"
-#include "ppapi/shared_impl/ppapi_switches.h"
 #include "ppapi/shared_impl/ppb_audio_shared.h"
 
 #if defined(IPC_MESSAGE_LOG_ENABLED)
@@ -96,8 +94,6 @@
                               const ppapi::PpapiNaClChannelArgs& args,
                               SerializedHandle handle);
   void OnPluginDispatcherMessageReceived(const IPC::Message& msg);
-
-  void SetPpapiKeepAliveThrottleFromCommandLine();
 
   std::set<PP_Instance> instances_;
   std::map<uint32, PluginDispatcher*> plugin_dispatchers_;
@@ -212,7 +208,6 @@
     logging::LoggingSettings settings;
     settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
     logging::InitLogging(settings);
-    SetPpapiKeepAliveThrottleFromCommandLine();
     command_line_and_logging_initialized = true;
   }
   // Tell the process-global GetInterface which interfaces it can return to the
@@ -253,18 +248,6 @@
       plugin_dispatchers_.find(id);
   if (dispatcher != plugin_dispatchers_.end())
     dispatcher->second->OnMessageReceived(msg);
-}
-
-void PpapiDispatcher::SetPpapiKeepAliveThrottleFromCommandLine() {
-  unsigned keepalive_throttle_interval_milliseconds = 0;
-  if (base::StringToUint(
-          CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-              switches::kPpapiKeepAliveThrottle),
-          &keepalive_throttle_interval_milliseconds)) {
-    ppapi::proxy::PluginGlobals::Get()->
-        set_keepalive_throttle_interval_milliseconds(
-            keepalive_throttle_interval_milliseconds);
-  }
 }
 
 }  // namespace