gfe-relnote: Fix an error in QUIC's SpdyUtils where content-length was

net/quic/spdy_utils.cc

Index: net/quic/spdy_utils.cc
diff --git a/net/quic/spdy_utils.cc b/net/quic/spdy_utils.cc
index 9f12ef5826d27e89faedb2f007eb349d65d0d88c..0b74cb6f69de66410b3589378b284bc1ef48520c 100644
--- a/net/quic/spdy_utils.cc
+++ b/net/quic/spdy_utils.cc
@@ -145,8 +145,8 @@ bool SpdyUtils::CopyAndValidateHeaders(const QuicHeaderList& header_list,
         base::SplitString(content_length_header, base::StringPiece("\0", 1),
                           base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
     for (const string& value : values) {
-      int new_value;
-      if (!base::StringToInt(value, &new_value) || new_value < 0) {
+      int64_t new_value;
+      if (!base::StringToInt64(value, &new_value) || new_value < 0) {
         DLOG(ERROR) << "Content length was either unparseable or negative.";
         return false;
       }