Check if a PWA is installed before checking the service worker and icon.

chrome/browser/android/banners/app_banner_manager_android.cc

Index: chrome/browser/android/banners/app_banner_manager_android.cc
diff --git a/chrome/browser/android/banners/app_banner_manager_android.cc b/chrome/browser/android/banners/app_banner_manager_android.cc
index a8a21c596d725c180fcbc12493b0883a405a0afa..8ae8d3c3811869b3aaf3cf342be763678a4dab16 100644
--- a/chrome/browser/android/banners/app_banner_manager_android.cc
+++ b/chrome/browser/android/banners/app_banner_manager_android.cc
@@ -107,6 +107,9 @@ bool AppBannerManagerAndroid::OnAppDetailsRetrieved(
   native_app_package_ = ConvertJavaStringToUTF8(env, japp_package);
   icon_url_ = GURL(ConvertJavaStringToUTF8(env, jicon_url));
 
+  if (!CheckIfShouldShowBanner())
+    return false;
+
   return ManifestIconDownloader::Download(
       web_contents(), icon_url_, GetIdealIconSizeInPx(),
       GetMinimumIconSizeInPx(),