Don't show host permission warnings for platform apps.

chrome/browser/extensions/api/permissions/permissions_api.cc

Index: chrome/browser/extensions/api/permissions/permissions_api.cc
diff --git a/chrome/browser/extensions/api/permissions/permissions_api.cc b/chrome/browser/extensions/api/permissions/permissions_api.cc
index e5e655579caf65043cf80412d829464f99ccc9a7..09d1e44039c0da684ee2e5608768a054aebbb5f0 100644
--- a/chrome/browser/extensions/api/permissions/permissions_api.cc
+++ b/chrome/browser/extensions/api/permissions/permissions_api.cc
@@ -202,7 +202,7 @@ bool RequestPermissionsFunction::RunImpl() {
   // we're skipping the confirmation UI. All extension types but INTERNAL
   // are allowed to silently increase their permission level.
   if (auto_confirm_for_tests == PROCEED ||
-      requested_permissions_->GetWarningMessages().size() == 0) {
+      requested_permissions_->GetWarningMessages(GetExtension()).size() == 0) {
     InstallUIProceed();
   } else if (auto_confirm_for_tests == ABORT) {
     // Pretend the user clicked cancel.