Insert trace_config as pbtxt in metadata table

Screenshot: https://screenshot.googleplex.com/6bbizGGZzFgkJTs
Bug: 130528569
Change-Id: I4f8eb2490a9754b295e347429fe223133b9b67be
diff --git a/BUILD b/BUILD
index 3ddec7a..920ce21 100644
--- a/BUILD
+++ b/BUILD
@@ -747,6 +747,16 @@
 )
 
 perfetto_cc_proto_descriptor(
+    name = "src_trace_processor_importers_gen_cc_config_descriptor",
+    deps = [
+        ":protos_perfetto_config_descriptor",
+    ],
+    outs = [
+        "src/trace_processor/importers/config.descriptor.h",
+    ],
+)
+
+perfetto_cc_proto_descriptor(
     name = "src_trace_processor_metrics_gen_cc_all_chrome_metrics_descriptor",
     deps = [
         ":protos_perfetto_metrics_chrome_descriptor",
@@ -1633,6 +1643,17 @@
     ],
 )
 
+# GN target: //protos/perfetto/config:descriptor
+perfetto_proto_descriptor(
+    name = "protos_perfetto_config_descriptor",
+    deps = [
+        ":protos_perfetto_config_protos",
+    ],
+    outs = [
+        "protos_perfetto_config_descriptor.bin",
+    ],
+)
+
 # GN target: //protos/perfetto/config/ftrace:cpp
 perfetto_cc_protocpp_library(
     name = "protos_perfetto_config_ftrace_cpp",
@@ -3049,6 +3070,7 @@
                ":protos_perfetto_trace_sys_stats_zero",
                ":protos_perfetto_trace_system_info_zero",
                ":protos_perfetto_trace_track_event_zero",
+               ":src_trace_processor_importers_gen_cc_config_descriptor",
                ":src_trace_processor_metrics_gen_cc_all_chrome_metrics_descriptor",
                ":src_trace_processor_metrics_gen_cc_metrics_descriptor",
            ] + PERFETTO_CONFIG.deps.jsoncpp +
@@ -3134,6 +3156,7 @@
                ":protos_perfetto_trace_sys_stats_zero",
                ":protos_perfetto_trace_system_info_zero",
                ":protos_perfetto_trace_track_event_zero",
+               ":src_trace_processor_importers_gen_cc_config_descriptor",
                ":src_trace_processor_metrics_gen_cc_all_chrome_metrics_descriptor",
                ":src_trace_processor_metrics_gen_cc_metrics_descriptor",
            ] + PERFETTO_CONFIG.deps.jsoncpp +
@@ -3307,6 +3330,7 @@
                ":protos_perfetto_trace_system_info_zero",
                ":protos_perfetto_trace_track_event_zero",
                ":protos_third_party_pprof_zero",
+               ":src_trace_processor_importers_gen_cc_config_descriptor",
                ":src_trace_processor_metrics_gen_cc_all_chrome_metrics_descriptor",
                ":src_trace_processor_metrics_gen_cc_metrics_descriptor",
            ] + PERFETTO_CONFIG.deps.jsoncpp +