Add Tsan2 to .gitignore

R=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/21809004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6589 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/.gitignore b/.gitignore
index 1a2fcbc..911aade 100644
--- a/.gitignore
+++ b/.gitignore
@@ -97,6 +97,7 @@
 /tools/grit
 /tools/gritsettings
 /tools/gyp
+/tools/memory
 /tools/protoc_wrapper
 /tools/python
 /tools/sanitizer_options