Bug 888175 - Don't log dropped frames in MediaDecoderStateMachine if MOZ_QUIET is set. r=padenot

content/media/MediaDecoderStateMachine.cpp

@@ -2466,12 +2466,14 @@ void MediaDecoderStateMachine::AdvanceFrame()
     while (mRealTime || clock_time >= frame->mTime) {
       mVideoFrameEndTime = frame->mEndTime;
       currentFrame = frame;
-      LOG(PR_LOG_DEBUG, ("%p Decoder discarding video frame %lld", mDecoder.get(), frame->mTime));
 #ifdef PR_LOGGING
+      if (!PR_GetEnv("MOZ_QUIET")) {
+        LOG(PR_LOG_DEBUG, ("%p Decoder discarding video frame %lld", mDecoder.get(), frame->mTime));
         if (droppedFrames++) {
           LOG(PR_LOG_DEBUG, ("%p Decoder discarding video frame %lld (%d so far)",
             mDecoder.get(), frame->mTime, droppedFrames - 1));
         }
+      }
 #endif
       mReader->VideoQueue().PopFront();
       // Notify the decode thread that the video queue's buffers may have