Add third_party/chrome to .gitignore

Change-Id: I9c78ab1702bf9556e6c42fc1f604936bcc87bf65
diff --git a/.gitignore b/.gitignore
index 40fa43c..9ce71e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,6 +39,8 @@
 third_party/classlib
 third_party/cf_segments.tar.gz
 third_party/cf_segments
+third_party/chrome.tar.gz
+third_party/chrome
 third_party/chrome/chrome_180917_ffbaa8.tar.gz
 third_party/chrome/chrome_180917_ffbaa8
 third_party/dart-sdk