Convert the async device ID getter to a chrome resource host

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 0540dadfb922be88ac58baa8e72da529061be61e..15cc0afab0f0ad8fe39f3cc7026bd820c52cd4d7 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -56,6 +56,7 @@
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/renderer_host/chrome_render_message_filter.h"
 #include "chrome/browser/renderer_host/chrome_render_view_host_observer.h"
+#include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
 #include "chrome/browser/renderer_host/plugin_info_message_filter.h"
 #include "chrome/browser/search_engines/search_provider_install_state_message_filter.h"
 #include "chrome/browser/speech/chrome_speech_recognition_manager_delegate.h"
@@ -83,6 +84,7 @@
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_child_process_host.h"
 #include "content/public/browser/browser_main_parts.h"
+#include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/browser_url_handler.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_process_host.h"
@@ -99,6 +101,7 @@
 #include "net/base/ssl_cert_request_info.h"
 #include "net/cookies/canonical_cookie.h"
 #include "net/cookies/cookie_options.h"
+#include "ppapi/host/ppapi_host.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/glue/webpreferences.h"
@@ -1601,6 +1604,13 @@ std::string ChromeContentBrowserClient::GetDefaultDownloadName() {
   return l10n_util::GetStringUTF8(IDS_DEFAULT_DOWNLOAD_FILENAME);
 }
 
+void ChromeContentBrowserClient::DidCreatePpapiPlugin(
+    content::BrowserPpapiHost* browser_host) {
+  browser_host->GetPpapiHost()->AddHostFactoryFilter(
+      scoped_ptr<ppapi::host::HostFactory>(
+          new ChromeBrowserPepperHostFactory(browser_host)));
+}
+
 bool ChromeContentBrowserClient::AllowPepperSocketAPI(
     content::BrowserContext* browser_context, const GURL& url) {
   if (!url.is_valid())