That's some very bad reporting from the Wall Street Journal:
"Mr. Simeonov reached out to the chief executive of Mozilla, who put him in touch with Jay Sullivan, vice president of products at Mozilla. The two spoke on June 9... The software was removed from the Firefox prototype on June 10."
Unfortunately, the WSJ reporter looked at the date of a Bugzilla comment, rather than the date of the change it was discussing. This was pointed out by Mozilla security engineer Jesse Ruderman, who provides more details in the comments here: http://weblogs.mozillazine.org/gerv/archives/2010/12/did_we_...
"Mr. Simeonov reached out to the chief executive of Mozilla, who put him in touch with Jay Sullivan, vice president of products at Mozilla. The two spoke on June 9... The software was removed from the Firefox prototype on June 10."
But in fact the software was removed on June 8, before the conversation between Sullivan and Simeonov. Here is the Mercurial changeset: http://hg.mozilla.org/mozilla-central/rev/76e9dd2d9322
Unfortunately, the WSJ reporter looked at the date of a Bugzilla comment, rather than the date of the change it was discussing. This was pointed out by Mozilla security engineer Jesse Ruderman, who provides more details in the comments here: http://weblogs.mozillazine.org/gerv/archives/2010/12/did_we_...