Added HttpUtils::HasValidators and HttpResponse::HasValidators

net/http/http_util.h

Index: net/http/http_util.h
diff --git a/net/http/http_util.h b/net/http/http_util.h
index 1bb3c93f8ab168152dc75205e00aabcc0d9c30cf..1613918e58e36e933d728bd32d7a4f1098f0d25b 100644
--- a/net/http/http_util.h
+++ b/net/http/http_util.h
@@ -203,6 +203,13 @@ class NET_EXPORT HttpUtil {
                                   const std::string& last_modified_header,
                                   const std::string& date_header);
 
+  // Returns true if this response has any validator (either a Last-Modified or
+  // an ETag) regardless if they are strong or weak.  See section 13.3.3 of RFC

[bengr, 2016/02/21 21:08:05]

Fix this comment to as per my last comment.

[jamartin, 2016/02/22 16:49:43]

Done.

+  // 2616.
+  static bool HasValidators(HttpVersion version,
+                            const std::string& etag_header,
+                            const std::string& last_modified_header);
+
   // Gets a vector of common HTTP status codes for histograms of status
   // codes.  Currently returns everything in the range [100, 600), plus 0
   // (for invalid responses/status codes).