Remove various 'using std::' statements from QUIC code and use

net/quic/core/frames/quic_stream_frame.cc

Index: net/quic/core/frames/quic_stream_frame.cc
diff --git a/net/quic/core/frames/quic_stream_frame.cc b/net/quic/core/frames/quic_stream_frame.cc
index 022bf69e10fba0ae7fbb8d7909f608b20dfa16b8..734698b0542574d8df09d46df06cac40627fbcdf 100644
--- a/net/quic/core/frames/quic_stream_frame.cc
+++ b/net/quic/core/frames/quic_stream_frame.cc
@@ -7,7 +7,6 @@
 #include "base/logging.h"
 
 using base::StringPiece;
-using std::ostream;
 
 namespace net {
 
@@ -72,7 +71,8 @@ QuicStreamFrame::QuicStreamFrame(QuicStreamId stream_id,
 
 QuicStreamFrame::~QuicStreamFrame() {}
 
-ostream& operator<<(ostream& os, const QuicStreamFrame& stream_frame) {
+std::ostream& operator<<(std::ostream& os,
+                         const QuicStreamFrame& stream_frame) {
   os << "{ stream_id: " << stream_frame.stream_id
      << ", fin: " << stream_frame.fin << ", offset: " << stream_frame.offset
      << ", length: " << stream_frame.data_length << " }\n";