Bug 1426408 - Remove some code for the TCP fast open for Windows 10 that is not neede any more. r=mayhemer

--HG--
extra : rebase_source : 8ab4fbe254eaaca0595cfbcd6ba527810ecc5102

netwerk/base/TCPFastOpenLayer.cpp

@@ -421,8 +421,7 @@ TCPFastOpenFinish(PRFileDesc *fd, PRErrorCode &err,
       result = PR_GetError();
       SOCKET_LOG(("TCPFastOpenFinish - sendto error=%d.\n", result));
 
-      if (result == PR_NOT_IMPLEMENTED_ERROR || // When a windows version does not support Fast Open it will return this error.
-          result == PR_NOT_TCP_SOCKET_ERROR) { // SendTo will return PR_NOT_TCP_SOCKET_ERROR if TCP Fast Open is turned off on Linux.
+      if (result == PR_NOT_TCP_SOCKET_ERROR) { // SendTo will return PR_NOT_TCP_SOCKET_ERROR if TCP Fast Open is turned off on Linux.
         // We can call connect again.
         fastOpenNotSupported = true;
         rv = (tfoFd->lower->methods->connect)(tfoFd->lower, &secret->mAddr,

netwerk/protocol/http/nsHttpHandler.h

@@ -184,10 +184,6 @@ public:
     // If one of tcp connections return PR_NOT_TCP_SOCKET_ERROR while trying
     // fast open, it means that Fast Open is turned off so we will not try again
     // until a restart. This is only on Linux.
-    // For windows 10 we can only check whether a version of windows support
-    // Fast Open at run time, so if we get error PR_NOT_IMPLEMENTED_ERROR it
-    // means that Fast Open is not supported and we will set mFastOpenSupported
-    // to false.
     void SetFastOpenNotSupported() { mFastOpenSupported = false; }
 
     void IncrementFastOpenConsecutiveFailureCounter();