--- a/dom/media/GraphDriver.cpp
+++ b/dom/media/GraphDriver.cpp
@@ -34,29 +34,16 @@ extern mozilla::LazyLogModule gMediaStre
 #else
 #define LIFECYCLE_LOG(...)
 #endif
 
 namespace mozilla {
 
 StaticRefPtr<nsIThreadPool> AsyncCubebTask::sThreadPool;
 
-struct AutoProfilerUnregisterThread
-{
-  // The empty ctor is used to silence a pre-4.8.0 GCC unused variable warning.
-  AutoProfilerUnregisterThread()
-  {
-  }
-
-  ~AutoProfilerUnregisterThread()
-  {
-    profiler_unregister_thread();
-  }
-};
-
 GraphDriver::GraphDriver(MediaStreamGraphImpl* aGraphImpl)
   : mIterationStart(0),
     mIterationEnd(0),
     mGraphImpl(aGraphImpl),
     mWaitState(WAITSTATE_RUNNING),
     mCurrentTimeStamp(TimeStamp::Now()),
     mPreviousDriver(nullptr),
     mNextDriver(nullptr)
@@ -191,19 +178,17 @@ ThreadedDriver::~ThreadedDriver()
 class MediaStreamGraphInitThreadRunnable : public Runnable {
 public:
   explicit MediaStreamGraphInitThreadRunnable(ThreadedDriver* aDriver)
     : mDriver(aDriver)
   {
   }
   NS_IMETHOD Run() override
   {
-    char aLocal;
     STREAM_LOG(LogLevel::Debug, ("Starting system thread"));
-    profiler_register_thread("MediaStreamGraph", &aLocal);
     LIFECYCLE_LOG("Starting a new system driver for graph %p\n",
                   mDriver->mGraphImpl);
 
     GraphDriver* previousDriver = nullptr;
     {
       MonitorAutoLock mon(mDriver->mGraphImpl->GetMonitor());
       previousDriver = mDriver->PreviousDriver();
     }
@@ -311,18 +296,16 @@ bool
 SystemClockDriver::IsFallback()
 {
   return mIsFallback;
 }
 
 void
 ThreadedDriver::RunThread()
 {
-  AutoProfilerUnregisterThread autoUnregister;
-
   bool stillProcessing = true;
   while (stillProcessing) {
     mIterationStart = IterationEnd();
     mIterationEnd += GetIntervalForIteration();
 
     GraphTime stateComputedTime = StateComputedTime();
     if (stateComputedTime < mIterationEnd) {
       STREAM_LOG(LogLevel::Warning, ("Media graph global underrun detected"));