Don't ignore manifest icons for sites that don't have a service worker.

chrome/browser/android/webapk/webapk_update_data_fetcher.cc

 // Copyright 2016 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/webapk/webapk_update_data_fetcher.h"
 
 #include <jni.h>
 #include <vector>
 
 #include "base/android/jni_array.h"
@@ skipping 103 matching lines @@
       ShortcutHelper::GetIdealHomescreenIconSizeInPx();
   params.minimum_primary_icon_size_in_px =
       ShortcutHelper::GetMinimumHomescreenIconSizeInPx();
   params.ideal_badge_icon_size_in_px =
       ShortcutHelper::GetIdealBadgeIconSizeInPx();
   params.minimum_badge_icon_size_in_px =
       ShortcutHelper::GetIdealBadgeIconSizeInPx();
   params.check_installable = true;
   params.fetch_valid_primary_icon = true;
   params.fetch_valid_badge_icon = true;
-  InstallableManager::CreateForWebContents(web_contents());
   InstallableManager* installable_manager =
       InstallableManager::FromWebContents(web_contents());
   installable_manager->GetData(
       params, base::Bind(&WebApkUpdateDataFetcher::OnDidGetInstallableData,
                          weak_ptr_factory_.GetWeakPtr()));
 }
 
 void WebApkUpdateDataFetcher::OnDidGetInstallableData(
     const InstallableData& data) {
   // Determine whether or not the manifest is WebAPK-compatible. There are 3
@@ skipping 105 matching lines @@
       info_.theme_color, info_.background_color);
 }
 
 void WebApkUpdateDataFetcher::OnWebManifestNotWebApkCompatible() {
   if (!is_initial_fetch_)
     return;
 
   Java_WebApkUpdateDataFetcher_onWebManifestForInitialUrlNotWebApkCompatible(
       base::android::AttachCurrentThread(), java_ref_);
 }