Break out balsa and epoll_server from net/tools/flip_server.

net/tools/balsa/string_piece_utils.h

Index: net/tools/balsa/string_piece_utils.h
diff --git a/net/tools/flip_server/string_piece_utils.h b/net/tools/balsa/string_piece_utils.h
similarity index 93%
rename from net/tools/flip_server/string_piece_utils.h
rename to net/tools/balsa/string_piece_utils.h
index 3c46dd91904ae52609d24c5467eb25f5e5013673..ed7677f52aa3e803b260596d7a27ca9455586232 100644
--- a/net/tools/flip_server/string_piece_utils.h
+++ b/net/tools/balsa/string_piece_utils.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NET_TOOLS_FLIP_SERVER_STRING_PIECE_UTILS_H_
-#define NET_TOOLS_FLIP_SERVER_STRING_PIECE_UTILS_H_
+#ifndef NET_TOOLS_BALSA_STRING_PIECE_UTILS_H_
+#define NET_TOOLS_BALSA_STRING_PIECE_UTILS_H_
 
 #include <ctype.h>
 
@@ -79,5 +79,5 @@ struct StringPieceCaseEqual {
 
 }  // namespace net
 
-#endif  // NET_TOOLS_FLIP_SERVER_STRING_PIECE_UTILS_H_
+#endif  // NET_TOOLS_BALSA_STRING_PIECE_UTILS_H_