Changed generated code deps to avoid deps on core libraries.

This will allow the core libraries to be visibility controlled if
necessary.

BUILD

@@ -137,7 +137,9 @@ cc_library(
 cc_library(
     name = "generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me",
     hdrs = [
+        "upb/decode.h",
         "upb/decode_fast.h",
+        "upb/encode.h",
         "upb/msg.h",
         "upb/msg_internal.h",
         "upb/port_def.inc",
@@ -151,6 +153,22 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "generated_reflection_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me",
+    hdrs = [
+        "upb/def.h",
+        "upb/port_def.inc",
+        "upb/port_undef.inc",
+    ],
+    copts = UPB_DEFAULT_COPTS,
+    visibility = ["//visibility:public"],
+    deps = [
+        ":descriptor_upb_proto",
+        ":reflection",
+        ":table",
+    ],
+)
+
 upb_proto_library(
     name = "descriptor_upb_proto",
     visibility = ["//visibility:public"],

bazel/upb_proto_library.bzl

@@ -299,7 +299,6 @@ _upb_proto_library_aspect = aspect(
         ),
         "_upb": attr.label_list(default = [
             "//:generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me",
-            "//:upb",
         ]),
         "_fasttable_enabled": attr.label(default = "//:fasttable_enabled"),
     }),
@@ -348,9 +347,7 @@ _upb_proto_reflection_library_aspect = aspect(
         ),
         "_upbdefs": attr.label_list(
             default = [
-                "//:generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me",
-                "//:upb",
-                "//:reflection",
+                "//:generated_reflection_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me",
             ],
         ),
     }),

cmake/CMakeLists.txt

@@ -97,6 +97,11 @@ add_library(generated_code_support__only_for_generated_code_do_not_use__i_give_p
 target_link_libraries(generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me INTERFACE
   table
   upb)
+add_library(generated_reflection_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me INTERFACE)
+target_link_libraries(generated_reflection_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me INTERFACE
+  descriptor_upb_proto
+  reflection
+  table)
 add_library(reflection
   ../upb/def.c
   ../upb/msg.h