Allow the app banner installability check to run on page load.

chrome/common/chrome_features.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/common/chrome_features.h"
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "extensions/features/features.h"
 #include "ppapi/features/features.h"
@@ skipping 74 matching lines @@
 #if defined(OS_MACOSX)
 // Enables or disables the browser's touch bar.
 const base::Feature kBrowserTouchBar{"BrowserTouchBar",
                                      base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables or disables keyboard focus for the tab strip.
 const base::Feature kTabStripKeyboardFocus{"TabStripKeyboardFocus",
                                            base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_MACOSX)
 
+// Whether to trigger app banner installability checks on page load.
+const base::Feature kCheckInstallabilityForBannerOnLoad{
+    "CheckInstallabilityForBannerOnLoad", base::FEATURE_DISABLED_BY_DEFAULT};
+
 #if defined(OS_WIN)
 const base::Feature kCleanupToolUI{"CleanupToolUI",
                                    base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 #if defined(OS_ANDROID)
 // Experiment to make Geolocation permissions in the omnibox and the default
 // search engine's search page consistent.
 const base::Feature kConsistentOmniboxGeolocation{
     "ConsistentOmniboxGeolocation", base::FEATURE_DISABLED_BY_DEFAULT};
@@ skipping 212 matching lines @@
   return base::FeatureList::IsEnabled(features::kPrefService) ||
 #if BUILDFLAG(ENABLE_PACKAGE_MASH_SERVICES)
          base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
              switches::kMusConfig) == switches::kMash;
 #else
          false;
 #endif
 }
 
 }  // namespace features