Revert of Avoids the "re-encode HPACK as SPDY3" step.

net/quic/spdy_utils_test.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #include "net/quic/spdy_utils.h"
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "net/test/gtest_util.h"
 
@@ skipping 123 matching lines @@
               UnorderedElementsAre(Pair("foo", "foovalue"),
                                    Pair("bar", "barvalue"), Pair("baz", "")));
   EXPECT_EQ(-1, content_length);
 }
 
 TEST(SpdyUtilsTest, CopyAndValidateHeadersEmptyName) {
   auto headers = FromList({{"foo", "foovalue"}, {"", "barvalue"}, {"baz", ""}});
   int64_t content_length = -1;
   SpdyHeaderBlock block;
   ASSERT_FALSE(
+      SpdyUtils::CopyAndValidateHeaders(*headers, &content_length, &block));
+}
+
+TEST(SpdyUtilsTest, CopyAndValidateHeadersUpperCaseName) {
+  auto headers =
+      FromList({{"foo", "foovalue"}, {"bar", "barvalue"}, {"bAz", ""}});
+  int64_t content_length = -1;
+  SpdyHeaderBlock block;
+  ASSERT_FALSE(
       SpdyUtils::CopyAndValidateHeaders(*headers, &content_length, &block));
 }
 
 TEST(SpdyUtilsTest, CopyAndValidateHeadersMultipleContentLengths) {
   auto headers = FromList({{"content-length", "9"},
                            {"foo", "foovalue"},
                            {"content-length", "9"},
                            {"bar", "barvalue"},
                            {"baz", ""}});
   int64_t content_length = -1;
@@ skipping 112 matching lines @@
   headers[":scheme"] = "https";
   EXPECT_FALSE(SpdyUtils::UrlIsValid(headers));
   headers[":authority"] = "www.google.com";
   EXPECT_FALSE(SpdyUtils::UrlIsValid(headers));
   headers[":path"] = "/index.html";
   EXPECT_TRUE(SpdyUtils::UrlIsValid(headers));
 }
 
 }  // namespace test
 }  // namespace net