Backed out changeset 333a899fb5e6 (bug 1198381)

xpcom/threads/nsThreadManager.cpp

@@ -16,8 +16,6 @@
 #include <unistd.h>
 #endif
 
-#include "MainThreadIdlePeriod.h"
-
 using namespace mozilla;
 
 static MOZ_THREAD_LOCAL(bool) sTLSIsMainThread;
@@ -101,11 +99,6 @@ nsThreadManager::Init()
     return rv;
   }
 
-  {
-    nsCOMPtr<nsIIdlePeriod> idlePeriod = new MainThreadIdlePeriod();
-    mMainThread->RegisterIdlePeriod(idlePeriod.forget());
-  }
-
   // We need to keep a pointer to the current thread, so we can satisfy
   // GetIsMainThread calls that occur post-Shutdown.
   mMainThread->GetPRThread(&mMainPRThread);