Fall back to shortcut A2HS when Phonesky is out of date or unavailable.

chrome/browser/android/banners/app_banner_manager_android.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/banners/app_banner_manager_android.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/android/jni_android.h"
@@ skipping 154 matching lines @@
       manifest_.related_applications.size()) {
     for (const auto& application : manifest_.related_applications) {
       std::string platform = base::UTF16ToUTF8(application.platform.string());
       std::string id = base::UTF16ToUTF8(application.id.string());
       if (CanHandleNonWebApp(platform, application.url, id))
         return;
     }
     Stop();
   }
 
-  if (ChromeWebApkHost::AreWebApkEnabled()) {
+  if (ChromeWebApkHost::CanInstallWebApk()) {
     if (!AreWebManifestUrlsWebApkCompatible(manifest_)) {
       ReportStatus(web_contents(), URL_NOT_SUPPORTED_FOR_WEBAPK);
       Stop();
       return;
     }
   }
 
   // No native app banner was requested. Continue checking for a web app banner.
   AppBannerManager::PerformInstallableCheck();
 }
@@ skipping 148 matching lines @@
 }
 
 // static
 void SetTotalEngagementToTrigger(JNIEnv* env,
                                  const JavaParamRef<jclass>& clazz,
                                  jdouble engagement) {
   AppBannerSettingsHelper::SetTotalEngagementToTrigger(engagement);
 }
 
 }  // namespace banners