diff --git a/tools/ml/trainer2/stopwords.py b/tools/ml/trainer2/stopwords.py
new file mode 100644
index 0000000..c4e4c31
--- /dev/null
+++ b/tools/ml/trainer2/stopwords.py
@@ -0,0 +1,21 @@
+# Copyright 2019 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.
+# Or at https://developers.google.com/open-source/licenses/bsd
+
+# A list of stopwords to parse text in component predictor.
+STOP_WORDS = ['i', 'me', 'my', 'myself', 'we', 'our', 'ours',
+  'ourselves', 'you', 'your', 'yours', 'yourself', 'yourselves',
+  'he', 'him', 'his', 'himself', 'she', 'her', 'hers', 'herself',
+  'it', 'its', 'itself', 'they', 'them', 'their', 'theirs', 'themselves',
+  'what', 'which', 'who', 'whom', 'this', 'that', 'these', 'those', 'am',
+  'is', 'are', 'was', 'were', 'be', 'been', 'being', 'have', 'has', 'had',
+  'having', 'do', 'does', 'did', 'doing', 'a', 'an', 'the', 'and', 'but',
+  'if', 'or', 'because', 'as', 'until', 'while', 'of', 'at', 'by', 'for',
+  'with', 'about', 'against', 'between', 'into', 'through', 'during',
+  'before', 'after', 'above', 'below', 'to', 'from', 'up', 'down', 'in',
+  'out', 'on', 'off', 'over', 'under', 'again', 'further', 'then', 'once',
+  'here', 'there', 'when', 'where', 'why', 'how', 'all', 'any', 'both',
+  'each', 'few', 'more', 'most', 'other', 'some', 'such', 'no', 'nor',
+  'not', 'only', 'own', 'same', 'so', 'than', 'too', 'very', 's', 't',
+  'can', 'will', 'just', 'don', 'should', 'now']