Move ChromeVox loading out of ComponentLoader.

chrome/browser/chromeos/accessibility/accessibility_manager.cc

Index: chrome/browser/chromeos/accessibility/accessibility_manager.cc
diff --git a/chrome/browser/chromeos/accessibility/accessibility_manager.cc b/chrome/browser/chromeos/accessibility/accessibility_manager.cc
index 8dee33378a3c86e0d7c1713a8b918fa7281fa7aa..621b7d6d56fd438eb44be88bc56ca677fc74ef8f 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_manager.cc
+++ b/chrome/browser/chromeos/accessibility/accessibility_manager.cc
@@ -227,7 +227,14 @@ void LoadChromeVoxExtension(
         render_view_host->GetRoutingID(),
         done_cb);
   }
-  extension_service->component_loader()->AddChromeVoxExtension(done_cb);
+
+  const base::FilePath::CharType* manifest_filename =
+      extensions::ComponentLoader::IsNormalSession()
+          ? extensions::kManifestFilename
+          : extension_misc::kGuestManifestFilename;
+  extension_service->component_loader()->AddWithManifestFile(
+      manifest_filename, GetChromeVoxPath(),
+      extension_misc::kChromeVoxExtensionId, done_cb);
 }
 
 void InjectChromeVoxContentScript(