Bug 1130803 - Use non-blocking input for Fetch synthetization pipe, r=bkelly,ehsan

--HG--
extra : rebase_source : 9e668e214efe646548c290b4348985caf35a0883

dom/fetch/FetchDriver.cpp

@@ -655,7 +655,9 @@ FetchDriver::OnStartRequest(nsIRequest* aRequest,
   rv = NS_NewPipe(getter_AddRefs(pipeInputStream),
                   getter_AddRefs(mPipeOutputStream),
                   0, /* default segment size */
-                  UINT32_MAX /* infinite pipe */);
+                  UINT32_MAX /* infinite pipe */,
+                  true /* non-blocking input, otherwise you deadlock */,
+                  false /* blocking output, since the pipe is 'in'finite */ );
   if (NS_WARN_IF(NS_FAILED(rv))) {
     FailWithNetworkError();
     // Cancel request.