Add net::SourceStream and net::FilterSourceStream

net/filter/source_stream.cc

Index: net/filter/source_stream.cc
diff --git a/net/cert/ocsp_revocation_status.h b/net/filter/source_stream.cc
similarity index 51%
copy from net/cert/ocsp_revocation_status.h
copy to net/filter/source_stream.cc
index 945104f26f613a9e38d7c6b59c2952873960b673..e2c4e6e2539fddfe2a54c19ce35fa39be5b9db4f 100644
--- a/net/cert/ocsp_revocation_status.h
+++ b/net/filter/source_stream.cc
@@ -2,17 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NET_CERT_OCSP_REVOCATION_STATUS_H
-#define NET_CERT_OCSP_REVOCATION_STATUS_H
+#include "net/filter/source_stream.h"
 
 namespace net {
 
-enum class OCSPRevocationStatus {
-  GOOD,
-  REVOKED,
-  UNKNOWN,
-};
+SourceStream::SourceStream(SourceType type) : type_(type) {}
 
-}  // namespace net
+SourceStream::~SourceStream() {}
+
+std::string SourceStream::Description() const {
+  return "";
+}
 
-#endif  // NET_CERT_OCSP_REVOCATION_STATUS_H
+}  // namespace net