DrMemory: Pass -j1 to pixel and javascript tests

tools/drmemory/scripts/pdfium_tests.py

Index: tools/drmemory/scripts/pdfium_tests.py
diff --git a/tools/drmemory/scripts/pdfium_tests.py b/tools/drmemory/scripts/pdfium_tests.py
index de0ce9cea21881efb56552518f04fe56b76fbc3c..5a89d9491b0930179f3fd67b503e627c777c4888 100644
--- a/tools/drmemory/scripts/pdfium_tests.py
+++ b/tools/drmemory/scripts/pdfium_tests.py
@@ -297,10 +297,8 @@ class ChromeTests:
     if self._options.build_dir:
       script_cmd.extend(["--build-dir", self._options.build_dir])
     # TODO(zhaoqin): it only runs in single process mode now,
-    # need figure out why it does not work with test_one_file_parallel
-    # in run_corpus_tests.py.
-    if script_name == "run_corpus_tests.py":
-        script_cmd.extend(["-j", "1"])
+    # need figure out why it does not work with test_one_file_parallel.
+    script_cmd.extend(["-j", "1"])
     # Now run script_cmd with the wrapper in cmd
     cmd.append("--")
     cmd.extend(script_cmd)