Normalize and update the header value checks to RFC 7230 for Fetch

third_party/WebKit/Source/modules/fetch/FetchHeaderList.cpp

 // Copyright 2014 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 "config.h"
 #include "modules/fetch/FetchHeaderList.h"
 
 #include "core/fetch/FetchUtils.h"
 #include "platform/network/HTTPParsers.h"
 #include "wtf/PassOwnPtr.h"
@@ skipping 131 matching lines @@
     return false;
 }
 
 bool FetchHeaderList::isValidHeaderName(const String& name)
 {
     // "A name is a case-insensitive byte sequence that matches the field-name
     // token production."
     return isValidHTTPToken(name);
 }
 
-bool FetchHeaderList::isValidHeaderValue(const String& value)
+bool FetchHeaderList::isValidHeaderValueRFC7230(const String& value)
 {
-    // "A value is a byte sequence that matches the field-value token production
-    // and contains no 0x0A or 0x0D bytes."
-    return isValidHTTPHeaderValue(value);
+    // checks the header value according to the latest Fetch API's header

[tyoshino (SeeGerritForStatus), 2015/09/28 06:35:40]

checks -> Checks

[shiva.jm, 2015/09/28 07:01:21]

Done.

+    // value definition (https://fetch.spec.whatwg.org/#concept-header-value) and RFC
+    // 7230 and it is different from isValidHTTPHeaderValue().
+
+    return value.isEmpty() || isValidHTTPFieldContentRFC7230(value);
 }
 
 } // namespace blink