Fixing size_t -> int truncation in //net/quic/spdy_utils.cc

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 4ebae318f55a1ccfe0bb1b6342055f714f7e7155..2db7eb0bf4fd579e0bf9b5060f0daa0940b9f8f0 100644
--- a/net/quic/spdy_utils.cc
+++ b/net/quic/spdy_utils.cc
@@ -39,7 +39,7 @@ string SpdyUtils::SerializeUncompressedHeaders(const SpdyHeaderBlock& headers,
                                                QuicVersion quic_version) {
   SpdyMajorVersion spdy_version = GetSpdyVersionForQuicVersion(quic_version);
 
-  int length = SpdyFramer::GetSerializedLength(spdy_version, &headers);
+  size_t length = SpdyFramer::GetSerializedLength(spdy_version, &headers);
   SpdyFrameBuilder builder(length, spdy_version);
   SpdyFramer::WriteHeaderBlock(&builder, spdy_version, &headers);
   scoped_ptr<SpdyFrame> block(builder.take());