Remove now unused Balsa code.

net/net.gypi

Index: net/net.gypi
diff --git a/net/net.gypi b/net/net.gypi
index 424f617efcc2c7a418df556bd1146e8967a6b509..3927022c153130db159bbf8e9da063d6caa8ed5a 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -1960,8 +1960,6 @@
       'tools/content_decoder_tool/content_decoder_tool.cc',
       'tools/content_decoder_tool/content_decoder_tool.h',
       'tools/content_decoder_tool/content_decoder_tool_unittest.cc',
-      'tools/balsa/balsa_frame_test.cc',
-      'tools/balsa/balsa_headers_test.cc',
       'tools/quic/quic_simple_client_test.cc',
       'tools/quic/test_tools/mock_quic_server_session_visitor.cc',
       'tools/quic/test_tools/mock_quic_server_session_visitor.h',
@@ -2008,10 +2006,7 @@
       'tools/quic/quic_simple_server_test.cc',
       'tools/quic/quic_spdy_client_stream_test.cc',
       'tools/quic/quic_time_wait_list_manager_test.cc',
-      'tools/quic/spdy_balsa_utils_test.cc',
       'tools/quic/stateless_rejector_test.cc',
-      'tools/quic/test_tools/http_message.cc',
-      'tools/quic/test_tools/http_message.h',
       'tools/quic/test_tools/limited_mtu_test_writer.cc',
       'tools/quic/test_tools/limited_mtu_test_writer.h',
       'tools/quic/test_tools/mock_epoll_server.cc',
@@ -2034,8 +2029,6 @@
       'tools/quic/test_tools/quic_test_server.h',
       'tools/quic/test_tools/server_thread.cc',
       'tools/quic/test_tools/server_thread.h',
-      'tools/quic/test_tools/simple_client.cc',
-      'tools/quic/test_tools/simple_client.h',
     ],
     'net_websockets_test_sources': [
       'server/http_connection_unittest.cc',