[Media Gallery] Add existing attached devices to the prefs in time for media galleries dialog.

chrome/browser/media_gallery/media_galleries_dialog_controller.cc

Index: chrome/browser/media_gallery/media_galleries_dialog_controller.cc
diff --git a/chrome/browser/media_gallery/media_galleries_dialog_controller.cc b/chrome/browser/media_gallery/media_galleries_dialog_controller.cc
index da531279bac336a9d19c4215d3d29ce42289816f..eafaf7b28a70c4327a716c18e4e5755728d2b0a4 100644
--- a/chrome/browser/media_gallery/media_galleries_dialog_controller.cc
+++ b/chrome/browser/media_gallery/media_galleries_dialog_controller.cc
@@ -6,7 +6,7 @@
 
 #include "base/path_service.h"
 #include "base/utf_string_conversions.h"
-#include "chrome/browser/media_gallery/media_galleries_preferences_factory.h"
+#include "chrome/browser/media_gallery/media_file_system_registry.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/chrome_select_file_policy.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
@@ -28,8 +28,9 @@ MediaGalleriesDialogController::MediaGalleriesDialogController(
       : web_contents_(web_contents),
         extension_(&extension),
         on_finish_(on_finish),
-        preferences_(MediaGalleriesPreferencesFactory::GetForProfile(
-            Profile::FromBrowserContext(web_contents->GetBrowserContext()))) {
+        preferences_(MediaFileSystemRegistry::GetInstance()->
+            GetProfilePreferences(Profile::FromBrowserContext(
+                web_contents->GetBrowserContext()))) {
   LookUpPermissions();
 
   dialog_.reset(MediaGalleriesDialog::Create(this));