Deserialization support for extensions in trace processor

Bug: 156904196
Change-Id: I6dcf8dc9241b0d875434e0608c6351318af948c5
diff --git a/BUILD b/BUILD
index 1f74e4b..b3993f6 100644
--- a/BUILD
+++ b/BUILD
@@ -2375,6 +2375,7 @@
 perfetto_proto_library(
     name = "protos_perfetto_trace_non_minimal_protos",
     srcs = [
+        "protos/perfetto/trace/extension_descriptor.proto",
         "protos/perfetto/trace/test_event.proto",
         "protos/perfetto/trace/trace.proto",
         "protos/perfetto/trace/trace_packet.proto",