Bug 1323100 - Stop double-registering the Media_Encoder thread with the profiler. r=froydnj

MozReview-Commit-ID: 8TQMVhbw13s

--HG--
extra : rebase_source : b2a55afe65d9a68d1d20d08806cb016ce040d044

dom/media/MediaRecorder.cpp

@@ -283,8 +283,6 @@ class MediaRecorder::Session: public nsIObserver,
       } else {
         // Flush out remaining encoded data.
         mSession->Extract(true);
-        if (mSession->mIsRegisterProfiler)
-           profiler_unregister_thread();
         if (NS_FAILED(NS_DispatchToMainThread(
                         new DestroyRunnable(mSession)))) {
           MOZ_ASSERT(false, "NS_DispatchToMainThread DestroyRunnable failed");
@@ -419,7 +417,6 @@ public:
     , mTimeSlice(aTimeSlice)
     , mStopIssued(false)
     , mIsStartEventFired(false)
-    , mIsRegisterProfiler(false)
     , mNeedSessionEndTask(true)
     , mSelectedVideoTrackID(TRACK_NONE)
   {
@@ -607,12 +604,6 @@ private:
     MOZ_ASSERT(NS_GetCurrentThread() == mReadThread);
     LOG(LogLevel::Debug, ("Session.Extract %p", this));
 
-    if (!mIsRegisterProfiler) {
-      char aLocal;
-      profiler_register_thread("Media_Encoder", &aLocal);
-      mIsRegisterProfiler = true;
-    }
-
     PROFILER_LABEL("MediaRecorder", "Session Extract",
       js::ProfileEntry::Category::OTHER);
 
@@ -922,8 +913,6 @@ private:
   bool mStopIssued;
   // Indicate the session had fire start event. Encoding thread only.
   bool mIsStartEventFired;
-  // The register flag for "Media_Encoder" thread to profiler
-  bool mIsRegisterProfiler;
   // False if the InitEncoder called successfully, ensure the
   // ExtractRunnable/DestroyRunnable will end the session.
   // Main thread only.