gn2bp: have //net:net export quiche proto headers

Public header in //net:net includes quiche proto headers, without making
the dependency public (or there is an issue in gn desc generation, I am
not sure).

Test: //components/cronet/android:cronet
Change-Id: I1cb0ed0d8c194b8d1c563509d57f0d2c2f731bfa
diff --git a/tools/gn2bp/Android.bp.swp b/tools/gn2bp/Android.bp.swp
index 4779774..6acaee7 100644
--- a/tools/gn2bp/Android.bp.swp
+++ b/tools/gn2bp/Android.bp.swp
@@ -3173,6 +3173,9 @@
         "cronet_aml_net_third_party_quiche_net_quic_test_tools_proto_gen_headers",
         "cronet_aml_url_buildflags",
     ],
+    export_static_lib_headers: [
+        "cronet_aml_net_third_party_quiche_quiche",
+    ],
     defaults: [
         "cronet_aml_defaults",
     ],