Add HTTP/2 error code from latest draft.

net/spdy/spdy_framer.cc

Index: net/spdy/spdy_framer.cc
diff --git a/net/spdy/spdy_framer.cc b/net/spdy/spdy_framer.cc
index 800b7704a918c03867c18825be9359f0988d18f5..c08b59763323e33f5a2e3a8e8cc349252aecd282 100644
--- a/net/spdy/spdy_framer.cc
+++ b/net/spdy/spdy_framer.cc
@@ -480,6 +480,10 @@ const char* SpdyFramer::StatusCodeToString(int status_code) {
       return "CONNECT_ERROR";
     case RST_STREAM_ENHANCE_YOUR_CALM:
       return "ENHANCE_YOUR_CALM";
+    case RST_STREAM_INADEQUATE_SECURITY:
+      return "INADEQUATE_SECURITY";
+    case RST_STREAM_HTTP_1_1_REQUIRED:
+      return "HTTP_1_1_REQUIRED";
   }
   return "UNKNOWN_STATUS";
 }