Convert class-full-of-statics CryptoTestUtils into a namespace

net/quic/test_tools/quic_stream_peer.h

Index: net/quic/test_tools/quic_stream_peer.h
diff --git a/net/quic/test_tools/quic_stream_peer.h b/net/quic/test_tools/quic_stream_peer.h
index 3d9b4f439e09a7ce59bb1605b69dbb39cfa513a2..aa634c5438944a31b1af783294ac1b0591513438 100644
--- a/net/quic/test_tools/quic_stream_peer.h
+++ b/net/quic/test_tools/quic_stream_peer.h
@@ -15,6 +15,7 @@
 namespace net {
 
 class QuicStream;
+class QuicSession;
 
 namespace test {
 
@@ -44,7 +45,8 @@ class QuicStreamPeer {
       bool fin,
       QuicReferenceCountedPointer<QuicAckListenerInterface> ack_listener);
 
-  static net::QuicStreamSequencer* sequencer(QuicStream* stream);
+  static QuicStreamSequencer* sequencer(QuicStream* stream);
+  static QuicSession* session(QuicStream* stream);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(QuicStreamPeer);