Use net::HttpResponseHeaders::IsRedirectResponseCode() from Blink

third_party/WebKit/Source/platform/network/NetworkUtils.cpp

Index: third_party/WebKit/Source/platform/network/NetworkUtils.cpp
diff --git a/third_party/WebKit/Source/platform/network/NetworkUtils.cpp b/third_party/WebKit/Source/platform/network/NetworkUtils.cpp
index 2305b6a16800974cc35ded9000ef2ce01e482506..ec49e5c3d93895bd2ef91c63c55c8e3093611b31 100644
--- a/third_party/WebKit/Source/platform/network/NetworkUtils.cpp
+++ b/third_party/WebKit/Source/platform/network/NetworkUtils.cpp
@@ -10,6 +10,7 @@
 #include "net/base/net_errors.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "net/base/url_util.h"
+#include "net/http/http_response_headers.h"
 #include "platform/SharedBuffer.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/URLConversion.h"
@@ -77,6 +78,10 @@ PassRefPtr<SharedBuffer> parseDataURL(const KURL& url,
   return nullptr;
 }
 
+bool isRedirectResponseCode(int responseCode) {
+  return net::HttpResponseHeaders::IsRedirectResponseCode(responseCode);
+}
+
 }  // NetworkUtils
 
 }  // namespace blink