Revert 167487 - Get full WebPluginInfo for the PDF plug-in before enabling it for print preview.

This CL coincided with the DuplicateTab test starting to fail due to a prior
test failing to unregister a window class; the addition of the AtExitManager
could potentially be the cause.  See crbug.com/160862.

BUG=159902

Review URL: https://chromiumcodereview.appspot.com/11364202

TBR=bauerb@chromium.org
Review URL: https://codereview.chromium.org/11312223

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@167524 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed