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 90750e999c6e24596178fe33f288873c788288e2..e83f6b9916362a4a65391e39e2f1ee4594d380ac 100644
--- a/net/http/http_util_unittest.cc
+++ b/net/http/http_util_unittest.cc
@@ -1177,4 +1177,27 @@ 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