Pretty-print QUIC CONNECTION_CLOSE and RST_STREAM error codes.

chrome/browser/ui/webui/net_internals/net_internals_ui.cc

Index: chrome/browser/ui/webui/net_internals/net_internals_ui.cc
diff --git a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
index b9501f4baffa5cfa0d6fc879be5919d7fda353d5..7c18b2c7de8a7bf402dab36a15a2e1fb17e4dbb8 100644
--- a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
+++ b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
@@ -1930,6 +1930,32 @@ Value* NetInternalsUI::GetConstants() {
     constants_dict->Set("netError", dict);
   }
 
+  // Add information on the relationship between QUIC error codes and their
+  // symbolic names.
+  {
+    DictionaryValue* dict = new DictionaryValue();
+
+#define QUIC_ERROR(error) \
+    dict->SetInteger(# error, static_cast<int>(net::QUIC_ ## error));
+#include "net/quic/quic_error_list.h"
+#undef QUIC_ERROR
+
+    constants_dict->Set("quicError", dict);
+  }
+
+  // Add information on the relationship between QUIC RST_STREAM error codes
+  // and their symbolic names.
+  {
+    DictionaryValue* dict = new DictionaryValue();
+
+#define QUIC_RST_STREAM_ERROR(error) \
+    dict->SetInteger(# error, static_cast<int>(net::QUIC_ ## error));
+#include "net/quic/quic_rst_stream_error_list.h"
+#undef QUIC_RST_STREAM_ERROR
+
+    constants_dict->Set("quicRstStreamError", dict);
+  }
+
   // Information about the relationship between event phase enums and their
   // symbolic names.
   {