Handle crashing Pepper plug-ins the same as crashing NPAPI plug-ins.

BUG=151895

Review URL: https://chromiumcodereview.appspot.com/10956065

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@158364 0039d316-1c4b-4281-b951-d872f2087c98
void PpapiPluginProcessHost::OnProcessLaunched() {
   host_impl_->set_plugin_process_handle(process_->GetHandle());
 }

void PpapiPluginProcessHost::OnProcessLaunched() {
   host_impl_->set_plugin_process_handle(process_->GetHandle());
 }
