v8: include CRDTP bindings in 147 Bazel builds

Add the `crdtp_binding.cc` source and CRDTP headers to the 147 Bazel V8
binding target so Windows GNU builds provide the symbols required by the
`v8::crdtp` Rust APIs.

Add a regression test that exercises CRDTP JSON conversion and dispatchable
message parsing.

codex-rs/v8-poc/src/lib.rs

@@ -78,4 +78,15 @@ mod tests {
     fn evaluates_string_concatenation() {
         assert_eq!(evaluate_expression("'hello ' + 'world'"), "hello world");
     }
+
+    #[test]
+    fn parses_crdtp_dispatchable_messages() {
+        let cbor = v8::crdtp::json_to_cbor(br#"{"id":7,"method":"Runtime.evaluate","params":{}}"#)
+            .expect("JSON should convert to CBOR");
+        let dispatchable = v8::crdtp::Dispatchable::new(&cbor);
+
+        assert!(dispatchable.ok());
+        assert_eq!(dispatchable.call_id(), 7);
+        assert_eq!(dispatchable.method(), b"Runtime.evaluate");
+    }
 }

patches/v8_bazel_rules.patch

@@ -218,7 +218,7 @@ index 421ebcd..52283ea 100644
      ],
  )
  
-@@ -4465,6 +4474,15 @@ filegroup(
+@@ -4465,6 +4474,35 @@ filegroup(
      ],
  )
  
@@ -230,6 +230,26 @@ index 421ebcd..52283ea 100644
 +    strip_include_prefix = "",
 +    visibility = ["//visibility:public"],
 +)
++
++cc_library(
++    name = "rusty_v8_crdtp_headers",
++    hdrs = [
++        "third_party/inspector_protocol/crdtp/cbor.h",
++        "third_party/inspector_protocol/crdtp/dispatch.h",
++        "third_party/inspector_protocol/crdtp/error_support.h",
++        "third_party/inspector_protocol/crdtp/export.h",
++        "third_party/inspector_protocol/crdtp/find_by_first.h",
++        "third_party/inspector_protocol/crdtp/frontend_channel.h",
++        "third_party/inspector_protocol/crdtp/json.h",
++        "third_party/inspector_protocol/crdtp/parser_handler.h",
++        "third_party/inspector_protocol/crdtp/protocol_core.h",
++        "third_party/inspector_protocol/crdtp/serializable.h",
++        "third_party/inspector_protocol/crdtp/span.h",
++        "third_party/inspector_protocol/crdtp/status.h",
++    ],
++    strip_include_prefix = "",
++    visibility = ["//visibility:public"],
++)
 +
  filegroup(
      name = "d8_files",

third_party/v8/BUILD.bazel

@@ -220,6 +220,20 @@ genrule(
     ]),
 )
 
+genrule(
+    name = "crdtp_binding_cc_147_4_0",
+    srcs = ["@v8_crate_147_4_0//:crdtp_binding_cc"],
+    outs = ["crdtp_binding_147_4_0.cc"],
+    cmd = " ".join([
+        "sed",
+        "-e 's|#include \"support.h\"|#include \"support_147_4_0.h\"|'",
+        "-e 's|\"v8/third_party/inspector_protocol/|\"third_party/inspector_protocol/|g'",
+        "$(location @v8_crate_147_4_0//:crdtp_binding_cc)",
+        ">",
+        '"$@"',
+    ]),
+)
+
 copy_file(
     name = "support_h_147_4_0",
     src = "@v8_crate_147_4_0//:support_h",
@@ -228,11 +242,15 @@ copy_file(
 
 cc_library(
     name = "v8_147_4_0_binding",
-    srcs = [":binding_cc_147_4_0"],
+    srcs = [
+        ":binding_cc_147_4_0",
+        ":crdtp_binding_cc_147_4_0",
+    ],
     hdrs = [":support_h_147_4_0"],
     copts = V8_COPTS + V8_CUSTOM_LIBCXX_COPTS,
     deps = [
         "@v8//:core_lib_icu",
+        "@v8//:rusty_v8_crdtp_headers",
         "@v8//:rusty_v8_internal_headers",
     ] + select({
         ":use_rusty_v8_custom_libcxx": [

third_party/v8/v8_crate.BUILD.bazel

@@ -5,6 +5,11 @@ filegroup(
     srcs = ["src/binding.cc"],
 )
 
+filegroup(
+    name = "crdtp_binding_cc",
+    srcs = ["src/crdtp_binding.cc"],
+)
+
 filegroup(
     name = "support_h",
     srcs = ["src/support.h"],