Move native "enable-webapk" check to ChromeWebApkHost.

chrome/chrome_browser.gypi

 # Copyright 2012 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 999 matching lines @@
       'browser/android/webapk/webapk_update_manager.cc',
       'browser/android/webapk/webapk_update_manager.h',
       'browser/android/webapps/add_to_homescreen_data_fetcher.cc',
       'browser/android/webapps/add_to_homescreen_data_fetcher.h',
       'browser/android/webapps/add_to_homescreen_dialog_helper.cc',
       'browser/android/webapps/add_to_homescreen_dialog_helper.h',
       'browser/android/webapps/single_tab_mode_tab_helper.cc',
       'browser/android/webapps/single_tab_mode_tab_helper.h',
       'browser/android/webapps/webapp_registry.cc',
       'browser/android/webapps/webapp_registry.h',
+      'browser/android/webapk/chrome_webapk_host.cc',
+      'browser/android/webapk/chrome_webapk_host.h',
       'browser/android/webapk/webapk_icon_hasher.cc',
       'browser/android/webapk/webapk_icon_hasher.h',
       'browser/android/webapk/webapk_installer.cc',
       'browser/android/webapk/webapk_installer.h',
       'browser/autofill/android/personal_data_manager_android.cc',
       'browser/autofill/android/personal_data_manager_android.h',
       'browser/dom_distiller/dom_distiller_service_factory_android.cc',
       'browser/dom_distiller/dom_distiller_service_factory_android.h',
       'browser/dom_distiller/tab_utils_android.cc',
       'browser/dom_distiller/tab_utils_android.h',
@@ skipping 1111 matching lines @@
       'android/java/src/org/chromium/chrome/browser/infobar/PermissionInfoBar.java',
       'android/java/src/org/chromium/chrome/browser/infobar/PermissionUpdateInfoBarDelegate.java',
       'android/java/src/org/chromium/chrome/browser/infobar/SavePasswordInfoBar.java',
       'android/java/src/org/chromium/chrome/browser/infobar/SimpleConfirmInfoBarBuilder.java',
       'android/java/src/org/chromium/chrome/browser/infobar/UpdatePasswordInfoBar.java',
       'android/java/src/org/chromium/chrome/browser/invalidation/InvalidationServiceFactory.java',
       'android/java/src/org/chromium/chrome/browser/metrics/LaunchMetrics.java',
       'android/java/src/org/chromium/chrome/browser/ssl/SecurityStateModel.java',
       'android/java/src/org/chromium/chrome/browser/toolbar/ToolbarModel.java',
       'android/java/src/org/chromium/chrome/browser/webapps/AddToHomescreenDialogHelper.java',
+      'android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java',
       'android/java/src/org/chromium/chrome/browser/webapps/ManifestUpgradeDetectorFetcher.java',
       'android/java/src/org/chromium/chrome/browser/webapps/WebappRegistry.java',
       'android/java/src/org/chromium/chrome/browser/webapps/WebApkUpdateManager.java',
     ],
     'chrome_browser_mdns_sources': [
       'browser/local_discovery/service_discovery_client_impl.cc',
       'browser/local_discovery/service_discovery_client_impl.h',
       'browser/local_discovery/service_discovery_client_mdns.cc',
       'browser/local_discovery/service_discovery_client_mdns.h',
       'browser/printing/cloud_print/privet_traffic_detector.cc',
@@ skipping 2172 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }