Updated to arc-runtime-54.5021.651.0
diff --git a/src/build/DEPS.polymer-elements b/src/build/DEPS.polymer-elements
deleted file mode 100644
index b220351..0000000
--- a/src/build/DEPS.polymer-elements
+++ /dev/null
@@ -1 +0,0 @@
-http://bowerarchiver.appspot.com/archive?core-elements=Polymer/core-elements%23^0.5&paper-elements=Polymer/paper-elements%23^0.5
diff --git a/src/build/configure.py b/src/build/configure.py
index 4a47e74..a826ddc 100755
--- a/src/build/configure.py
+++ b/src/build/configure.py
@@ -15,8 +15,8 @@
 
 from src.build import build_common
 from src.build import config_runner
-from src.build import download_arc_welder_deps
 from src.build import download_cts_files
+from src.build import download_naclports_files
 from src.build import download_sdk_and_ndk
 from src.build import open_source
 from src.build import staging
@@ -141,7 +141,7 @@
   sync_nacl_sdk.check_and_perform_updates(cache_path, cache_size)
   download_sdk_and_ndk.check_and_perform_updates(cache_path, cache_size)
   download_cts_files.check_and_perform_updates(cache_path, cache_size)
-  download_arc_welder_deps.check_and_perform_updates(cache_path, cache_size)
+  download_naclports_files.check_and_perform_updates(cache_path, cache_size)
 
   if sync_gdb_multiarch.main():
     sys.exit(1)
diff --git a/src/build/download_arc_welder_deps.py b/src/build/download_arc_welder_deps.py
deleted file mode 100644
index 55a2bf7..0000000
--- a/src/build/download_arc_welder_deps.py
+++ /dev/null
@@ -1,28 +0,0 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-from src.build.util import download_package_util
-from src.build.util import npm_package_sync
-
-
-def check_and_perform_updates(cache_base_path, cache_history_size):
-  download_package_util.BasicCachedPackage(
-      'src/build/DEPS.naclports-python',
-      'out/naclports-python',
-      cache_base_path=cache_base_path,
-      cache_history_size=cache_history_size,
-      download_method=download_package_util.gsutil_download_url()
-  ).check_and_perform_update()
-
-  download_package_util.BasicCachedPackage(
-      'src/build/DEPS.polymer-elements',
-      'out/polymer-elements',
-      cache_base_path=cache_base_path,
-      cache_history_size=cache_history_size
-  ).check_and_perform_update()
-
-  npm_package_sync.NpmPackageSync(
-      'src/build/DEPS.arc-welder-npm-packages',
-      'out/arc-welder-npm-packages'
-  ).check_and_perform_update()
diff --git a/src/build/download_naclports_files.py b/src/build/download_naclports_files.py
new file mode 100644
index 0000000..0a53f04
--- /dev/null
+++ b/src/build/download_naclports_files.py
@@ -0,0 +1,15 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from src.build.util import download_package_util
+
+
+def check_and_perform_updates(cache_base_path, cache_history_size):
+  download_package_util.BasicCachedPackage(
+      'src/build/DEPS.naclports-python',
+      'out/naclports-python',
+      cache_base_path=cache_base_path,
+      cache_history_size=cache_history_size,
+      download_method=download_package_util.gsutil_download_url()
+  ).check_and_perform_update()
diff --git a/src/build/install-build-deps.sh b/src/build/install-build-deps.sh
index 7936e34..01c59bc 100755
--- a/src/build/install-build-deps.sh
+++ b/src/build/install-build-deps.sh
@@ -54,11 +54,8 @@
 "
 
 # python-markdown is needed to convert Markdown files to HTML.
-# npm is needed to install vulcanize
 arc_list="$arc_list
 python-markdown
-nodejs-legacy
-npm
 "
 
 # Packages for running 32-bit Chrome at out/chrome32/chrome. To build 32-bit