MacPWAs: Fix crash in non-multi-profile

The funciton UpdateAppProfileMenu should only be hit when in
multi-profile mode.

TBR=dominickn

Bug: 1017755
Change-Id: Ib35aeb8ed4da2ff2af669c01d4996e4c278adfff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1879687Reviewed-by: ccameron <ccameron@chromium.org>
Commit-Queue: ccameron <ccameron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709116}

chrome/browser/apps/app_shim/extension_app_shim_handler_mac.cc

@@ -970,6 +970,7 @@ void ExtensionAppShimHandler::OnGotProfilesForApp(
   if (found_app == apps_.end())
     return;
   AppState* app_state = found_app->second.get();
+  DCHECK(app_state->IsMultiProfile());
   app_state->installed_profiles.clear();
   for (const auto& profile_path : profiles)
     app_state->installed_profiles.insert(profile_path);
@@ -1043,11 +1044,13 @@ ExtensionAppShimHandler::GetOrCreateProfileState(
     // ideally this should be done when when |multi_profile_host| is created
     // above, and should be updated when apps are installed or uninstalled
     // (but do not).
+    if (app_state->IsMultiProfile()) {
       UpdateProfileMenuItems();
       GetProfilesForAppAsync(
           app_id, base::BindOnce(&ExtensionAppShimHandler::OnGotProfilesForApp,
                                  weak_factory_.GetWeakPtr(), app_id));
     }
+  }
   return found_profile->second.get();
 }