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

net/http/http_util_unittest.cc

Index: net/http/http_util_unittest.cc
diff --git a/net/http/http_util_unittest.cc b/net/http/http_util_unittest.cc
index a5c984db66b1f5e46798036e8c1ac3758fab9f81..f1485e6ddedfdf3129e2159ff53d2a4cefad45b2 100644
--- a/net/http/http_util_unittest.cc
+++ b/net/http/http_util_unittest.cc
@@ -1178,4 +1178,27 @@ TEST(HttpUtilTest, NameValuePairsIteratorMissingEndQuote) {
       &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