Remove usages of native.maven_jar rule.

The rule is deprecated from bazel 0.29 and is removed in bazel 2.0

PiperOrigin-RevId: 287176230

build_defs/internal_do_not_use/jsinterop_generator_workspace.bzl

@@ -1,6 +1,7 @@
 """Macro to use for loading the jsinterop generator repository"""
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_jar")
+load("@bazel_tools//tools/build_defs/repo:jvm.bzl", "jvm_maven_import_external")
 
 def setup_jsinterop_generator_workspace():
     """Load all dependencies needed for jsinterop generator."""
@@ -13,8 +14,9 @@ def setup_jsinterop_generator_workspace():
 
     # third_party libs used by jsinterop-base
     # TODO(dramaix): add a macro for loading JsInterop-base repo
-    native.maven_jar(
+    jvm_maven_import_external(
         name = "org_gwtproject_gwt_dev",
         artifact = "com.google.gwt:gwt-dev:2.8.1",
+        server_urls = ["https://repo1.maven.org/maven2/"],
+        licenses = ["notice"],
     )
-