Don't use a separate call context for subchannel calls.
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index 318092f..2e54b9d 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -1293,6 +1293,7 @@
'test/core/end2end/tests/empty_batch.cc',
'test/core/end2end/tests/filter_call_init_fails.cc',
'test/core/end2end/tests/filter_causes_close.cc',
+ 'test/core/end2end/tests/filter_context.cc',
'test/core/end2end/tests/filter_latency.cc',
'test/core/end2end/tests/filter_status_code.cc',
'test/core/end2end/tests/graceful_server_shutdown.cc',
