Whitespace change to test gsubtreed.

BUG=chromium:438149

Cr-Commit-Position: refs/heads/master@{#8355}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8355 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/build/whitespace.txt b/webrtc/build/whitespace.txt
new file mode 100644
index 0000000..fbd9531
--- /dev/null
+++ b/webrtc/build/whitespace.txt
@@ -0,0 +1,5 @@
+You can modify this file to create no-op changelists.
+Try to write something funny. And please don't add trailing whitespace.
+
+Once upon a time there was an elephant in Stockholm.
+