Fixes for streaming compression.

src/core/channel/compress_filter.c

@@ -174,6 +174,8 @@ static void process_send_ops(grpc_call_element *elem,
   size_t i;
   int did_compress = 0;
 
+  /* In streaming calls, we need to reset the previously accumulated slices */
+  gpr_slice_buffer_reset_and_unref(&calld->slices);
   for (i = 0; i < send_ops->nops; ++i) {
     grpc_stream_op *sop = &send_ops->ops[i];
     switch (sop->type) {

src/core/transport/chttp2/frame_data.c

@@ -92,7 +92,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
       p->frame_type = *cur;
       switch (p->frame_type) {
         case 0:
-          /* noop */
+          p->is_frame_compressed = 0;  /* GPR_FALSE */
           break;
         case 1:
           p->is_frame_compressed = 1;  /* GPR_TRUE */