Remove references to Chrome Frame files from copy script.

BUG=316496
R=gab@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/138333002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244743 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 244743