Revert r170531

r170531 copied files to make the diff of r170536 saner.
Now that r170536 was reverted, we need to revert r170531 at the same time.
Otherwise, we'll leave meaningless files in the code base.

TBR=tkent

Review URL: https://codereview.chromium.org/221663003

git-svn-id: svn://svn.chromium.org/blink/trunk@170619 bbb929c8-8fbe-4397-9dbb-9b2b20218538