Add HTTP/2 error code NO_ERROR.

net/spdy/spdy_session.h

Index: net/spdy/spdy_session.h
diff --git a/net/spdy/spdy_session.h b/net/spdy/spdy_session.h
index af2ff0cd29f30c328afd64a36c2d44e6396ec47c..798614a34acab53e3c493f83b8556c8dbea4bad2 100644
--- a/net/spdy/spdy_session.h
+++ b/net/spdy/spdy_session.h
@@ -129,6 +129,7 @@ enum SpdyProtocolErrorDetails {
   STATUS_CODE_ENHANCE_YOUR_CALM = 34,
   STATUS_CODE_INADEQUATE_SECURITY = 35,
   STATUS_CODE_HTTP_1_1_REQUIRED = 36,
+  STATUS_CODE_NO_ERROR = 41,
 
   // SpdySession errors
   PROTOCOL_ERROR_UNEXPECTED_PING = 22,
@@ -140,7 +141,7 @@ enum SpdyProtocolErrorDetails {
   PROTOCOL_ERROR_RECEIVE_WINDOW_VIOLATION = 28,
 
   // Next free value.
-  NUM_SPDY_PROTOCOL_ERROR_DETAILS = 41,
+  NUM_SPDY_PROTOCOL_ERROR_DETAILS = 42,
 };
 SpdyProtocolErrorDetails NET_EXPORT_PRIVATE
     MapFramerErrorToProtocolError(SpdyFramer::SpdyError error);
@@ -153,7 +154,7 @@ SpdyGoAwayStatus NET_EXPORT_PRIVATE MapNetErrorToGoAwayStatus(Error err);
 // to be updated with new values, as do the mapping functions above.
 static_assert(17 == SpdyFramer::LAST_ERROR,
               "SpdyProtocolErrorDetails / Spdy Errors mismatch");
-static_assert(17 == RST_STREAM_NUM_STATUS_CODES,
+static_assert(18 == RST_STREAM_NUM_STATUS_CODES,
               "SpdyProtocolErrorDetails / RstStreamStatus mismatch");
 
 // A helper class used to manage a request to create a stream.