Regenerate ART test files.

Disable new run-test `821-many-args` as it is currently failing when
run with the `ArtRunTest` TradeFed test runner.

Output of `art/test/utils/regen-test-files -m`:

  $ art/test/utils/regen-test-files
  Generated Blueprint files for 622 ART run-tests out of 924 (67%).
  Generated TEST_MAPPING entries for 376 ART run-tests out of 924 (40%):
    94 tests (25%) in `mainline-presubmit` test group.
    376 tests (100%) in `presubmit` test group.
    0 tests (0%) in `postsubmit` test group.

Test: atest --test-mapping art:presubmit
Change-Id: I03d13ca5ce1c26b31bf2c47a34f5c3826702728b
diff --git a/TEST_MAPPING b/TEST_MAPPING
index b33f147..91b8c8d 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -279,6 +279,9 @@
     },
     {
       "name": "art-run-test-140-dce-regression[com.google.android.art.apex]"
+    },
+    {
+      "name": "art-run-test-140-field-packing[com.google.android.art.apex]"
     }
   ],
   "presubmit": [
diff --git a/test/821-many-args/Android.bp b/test/821-many-args/Android.bp
new file mode 100644
index 0000000..75f9798
--- /dev/null
+++ b/test/821-many-args/Android.bp
@@ -0,0 +1,40 @@
+// Generated by `regen-test-files`. Do not edit manually.
+
+// Build rules for ART run-test `821-many-args`.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "art_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["art_license"],
+}
+
+// Test's Dex code.
+java_test {
+    name: "art-run-test-821-many-args",
+    defaults: ["art-run-test-defaults"],
+    test_config_template: ":art-run-test-target-no-test-suite-tag-template",
+    srcs: ["src/**/*.java"],
+    data: [
+        ":art-run-test-821-many-args-expected-stdout",
+        ":art-run-test-821-many-args-expected-stderr",
+    ],
+}
+
+// Test's expected standard output.
+genrule {
+    name: "art-run-test-821-many-args-expected-stdout",
+    out: ["art-run-test-821-many-args-expected-stdout.txt"],
+    srcs: ["expected-stdout.txt"],
+    cmd: "cp -f $(in) $(out)",
+}
+
+// Test's expected standard error.
+genrule {
+    name: "art-run-test-821-many-args-expected-stderr",
+    out: ["art-run-test-821-many-args-expected-stderr.txt"],
+    srcs: ["expected-stderr.txt"],
+    cmd: "cp -f $(in) $(out)",
+}
diff --git a/test/utils/regen-test-files b/test/utils/regen-test-files
index 8b8565f..a3db507 100755
--- a/test/utils/regen-test-files
+++ b/test/utils/regen-test-files
@@ -256,8 +256,16 @@
   "708-jit-cache-churn",
   "717-integer-value-of",
   "720-thread-priority",
-  "728-imt-conflict-zygote",  # Custom `run` script + dependency on `libarttest`.
-  "813-fp-args",              # Dependency on `libarttest`.
+  # 728-imt-conflict-zygote: Custom `run` script + dependency on `libarttest`.
+  "728-imt-conflict-zygote",
+  # 813-fp-args: Dependency on `libarttest`.
+  "813-fp-args",
+  # 821-many-args: Fails with:
+  #
+  #   Test command execution failed with status FAILED: CommandResult: exit code=1, out=, err=Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
+  #           at Main.main(Main.java:20)
+  #
+  "821-many-args",
   "900-hello-plugin",
   "901-hello-ti-agent",
   "902-hello-transformation",