Moved sending the PluginProcessMsg_AskForShutdown message to the CreateChannel method. This ensures that it gets sent before all other messages.
Also moved the font precaching code to a common place because it is needed in multiple places.
BUG=None
TEST=Test for regressions with launching the utility process.

Review URL: http://codereview.chromium.org/2906007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@52283 0039d316-1c4b-4281-b951-d872f2087c98