Convert the async device ID getter to a chrome resource host

chrome/renderer/pepper/pepper_helper.cc

Index: chrome/renderer/pepper/pepper_helper.cc
diff --git a/chrome/renderer/pepper/pepper_helper.cc b/chrome/renderer/pepper/pepper_helper.cc
index 37b904cf1827ea0d567a65abac09e95c96acac8f..73ac2b6efbbc4eb9dc654907f842e26a71081378 100644
--- a/chrome/renderer/pepper/pepper_helper.cc
+++ b/chrome/renderer/pepper/pepper_helper.cc
@@ -21,7 +21,9 @@ PepperHelper::~PepperHelper() {
 void PepperHelper::DidCreatePepperPlugin(content::RendererPpapiHost* host) {
   // TODO(brettw) figure out how to hook up the host factory. It needs some
   // kind of filter-like system to allow dynamic additions.
-  // new ChromeRendererPepperHostFactory(host);
+  host->GetPpapiHost()->AddHostFactoryFilter(
+      scoped_ptr<ppapi::host::HostFactory>(
+          new ChromeRendererPepperHostFactory));
   host->GetPpapiHost()->AddInstanceMessageFilter(
       scoped_ptr<ppapi::host::InstanceMessageFilter>(
           new PepperFlashRendererMessageFilter(host)));