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

chrome/browser/banners/app_banner_manager.cc

Index: chrome/browser/banners/app_banner_manager.cc
diff --git a/chrome/browser/banners/app_banner_manager.cc b/chrome/browser/banners/app_banner_manager.cc
index d60e013bc216402d065ec97ab526b5f66640a69c..796a9eeab2f87b808379fcd4821b704b5b262203 100644
--- a/chrome/browser/banners/app_banner_manager.cc
+++ b/chrome/browser/banners/app_banner_manager.cc
@@ -149,7 +149,7 @@ AppBannerManager::AppBannerManager(content::WebContents* web_contents)
       SiteEngagementObserver(SiteEngagementService::Get(
           Profile::FromBrowserContext(web_contents->GetBrowserContext()))),
       state_(State::INACTIVE),
-      manager_(nullptr),
+      manager_(InstallableManager::FromWebContents(web_contents)),
       event_request_id_(-1),
       binding_(this),
       has_sufficient_engagement_(false),
@@ -158,9 +158,6 @@ AppBannerManager::AppBannerManager(content::WebContents* web_contents)
       triggered_by_devtools_(false),
       need_to_log_status_(false),
       weak_factory_(this) {
-  // Ensure the InstallableManager exists since we have a hard dependency on it.
-  InstallableManager::CreateForWebContents(web_contents);
-  manager_ = InstallableManager::FromWebContents(web_contents);
   DCHECK(manager_);
 
   AppBannerSettingsHelper::UpdateFromFieldTrial();