Re-land: Only allow HTTP/0.9 support on default ports.

net/test/embedded_test_server/default_handlers.cc

Index: net/test/embedded_test_server/default_handlers.cc
diff --git a/net/test/embedded_test_server/default_handlers.cc b/net/test/embedded_test_server/default_handlers.cc
index 1b49ceb61ca6ce003524035cc32437ef5bfbf95e..16c2487742e2520e2f0d980e06eb8e1965dddc26 100644
--- a/net/test/embedded_test_server/default_handlers.cc
+++ b/net/test/embedded_test_server/default_handlers.cc
@@ -17,6 +17,7 @@
 #include "base/format_macros.h"
 #include "base/macros.h"
 #include "base/md5.h"
+#include "base/memory/ptr_util.h"
 #include "base/path_service.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
@@ -159,6 +160,12 @@ std::unique_ptr<HttpResponse> HandleEchoAll(const HttpRequest& request) {
   return std::move(http_response);
 }
 
+// /echo-raw
+// Returns the query string as the raw response (no HTTP headers).
+std::unique_ptr<HttpResponse> HandleEchoRaw(const HttpRequest& request) {
+  return base::MakeUnique<RawHttpResponse>("", request.GetURL().query());
+}
+
 // /set-cookie?COOKIES
 // Sets response cookies to be COOKIES.
 std::unique_ptr<HttpResponse> HandleSetCookie(const HttpRequest& request) {
@@ -601,6 +608,7 @@ void RegisterDefaultHandlers(EmbeddedTestServer* server) {
   server->RegisterDefaultHandler(
       PREFIXED_HANDLER("/echotitle", &HandleEchoTitle));
   server->RegisterDefaultHandler(PREFIXED_HANDLER("/echoall", &HandleEchoAll));
+  server->RegisterDefaultHandler(PREFIXED_HANDLER("/echo-raw", &HandleEchoRaw));
   server->RegisterDefaultHandler(
       PREFIXED_HANDLER("/set-cookie", &HandleSetCookie));
   server->RegisterDefaultHandler(