Bug 1234251 - Remove HttpChannelChild::mSynthesizedResponseHead; r=jdm

netwerk/protocol/http/HttpChannelChild.h

@@ -183,7 +183,6 @@ private:
   nsCOMPtr<nsIChildChannel> mRedirectChannelChild;
   RefPtr<InterceptStreamListener> mInterceptListener;
   RefPtr<nsInputStreamPump> mSynthesizedResponsePump;
-  nsAutoPtr<nsHttpResponseHead> mSynthesizedResponseHead;
   nsCOMPtr<nsIInputStream> mSynthesizedInput;
   int64_t mSynthesizedStreamLength;