Apply runtime_blocked_hosts and runtime_allowed_hosts from the ExtensionSettings policy at the default scope on startup.

Bug: 954215
Change-Id: Iabc207df150ac9688753706f5d2bf4787c63f256
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1626293
Reviewed-by: Devlin <[email protected]>
Commit-Queue: Nick Peterson <[email protected]>
Auto-Submit: Nick Peterson <[email protected]>
Cr-Commit-Position: refs/heads/master@{#662412}
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index c061c6f7..96c69af 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -416,6 +416,7 @@
   if (load_saved_extensions)
     InstalledLoader(this).LoadAllExtensions();
 
+  CheckManagementPolicy();
   OnInstalledExtensionsLoaded();
 
   LoadExtensionsFromCommandLineFlag(::switches::kDisableExtensionsExcept);