Add deps attribute to flatbuffer_cc_library (#7107)

I'm not seeing the reason why we didn't attempt to support transitive
dependencies for flatbuffer_cc_library, and the current setup makes
having to propagate new dependencies to all of their recursive
dependents obnoxious.

tests/BUILD.bazel

@@ -116,14 +116,50 @@ cc_library(
 )
 
 flatbuffer_cc_library(
-    name = "monster_test_cc_fbs",
-    srcs = ["monster_test.fbs"],
-    include_paths = ["tests/include_test"],
-    includes = [
+    name = "include_test_fbs",
+    srcs = [
         "include_test/include_test1.fbs",
         "include_test/sub/include_test2.fbs",
     ],
+    include_paths = ["tests/include_test"],
+)
+
+flatbuffer_cc_library(
+    name = "monster_test_cc_fbs",
+    srcs = ["monster_test.fbs"],
+    include_paths = ["tests/include_test"],
     visibility = ["//grpc/tests:__subpackages__"],
+    deps = [":include_test_fbs"],
+)
+
+# Test that running without --no-includes works properly (monster_test doesn't
+# work cleanly due to the circular dependency in the include_tests/ files).
+include_test_args = [
+    "--gen-object-api",
+    "--gen-compare",
+    "--gen-mutable",
+    "--reflect-names",
+    "--cpp-ptr-type flatbuffers::unique_ptr",
+    "--force-empty",
+]
+
+flatbuffer_cc_library(
+    name = "included_test_fbs",
+    srcs = ["included_test.fbs"],
+    flatc_args = include_test_args,
+)
+
+flatbuffer_cc_library(
+    name = "includer_test_fbs",
+    srcs = ["includer_test.fbs"],
+    flatc_args = include_test_args,
+    deps = [":included_test_fbs"],
+)
+
+cc_library(
+    name = "include_build_test",
+    srcs = ["include_build_test.cc"],
+    deps = [":includer_test_fbs"],
 )
 
 flatbuffer_cc_library(

tests/include_build_test.cc

@@ -0,0 +1 @@
+#include "tests/includer_test_generated.h"

tests/included_test.fbs

@@ -0,0 +1,3 @@
+table Wrapped {
+  a:double;
+}

tests/includer_test.fbs

@@ -0,0 +1,5 @@
+include "tests/included_test.fbs";
+
+table Wrapper {
+  a:Wrapped;
+}