Add UMAs for checking header values against RFC 7230 in //net

net/http/http_util_unittest.cc

 // Copyright (c) 2012 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 <algorithm>
 
 #include "base/strings/string_util.h"
 #include "net/http/http_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 1159 matching lines @@
   std::string data = "name='value";
   HttpUtil::NameValuePairsIterator parser(data.begin(), data.end(), ';');
   EXPECT_TRUE(parser.valid());
 
   ASSERT_NO_FATAL_FAILURE(
       CheckNextNameValuePair(&parser, true, true, "name", "value"));
   ASSERT_NO_FATAL_FAILURE(CheckNextNameValuePair(
       &parser, false, true, std::string(), std::string()));
 }
 
+TEST(HttpUtilTest, IsValidHeaderValueRFC7230) {
+  EXPECT_TRUE(HttpUtil::IsValidHeaderValueRFC7230(""));
+
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230(" "));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230(" q"));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("q "));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("\t"));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("\tq"));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("q\t"));
+
+  EXPECT_TRUE(HttpUtil::IsValidHeaderValueRFC7230("q q"));
+  EXPECT_TRUE(HttpUtil::IsValidHeaderValueRFC7230("q\tq"));
+
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230(std::string("\0", 1)));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230(std::string("q\0q", 3)));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("q\rq"));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("q\nq"));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("q\x01q"));
+  EXPECT_FALSE(HttpUtil::IsValidHeaderValueRFC7230("q\x7fq"));
+
+  EXPECT_TRUE(HttpUtil::IsValidHeaderValueRFC7230("q\x80q"));
+}
+
 }  // namespace net