Don't run primary plugin detection if plugin snapshotting is off
https://bugs.webkit.org/show_bug.cgi?id=114222
<rdar://problem/13603988>

Reviewed by Dean Jackson.

* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::determinePrimarySnapshottedPlugIn):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147964 268f45cc-cd09-0410-ab3c-d52691b4dbfc