Remove unused packaged app window controls code.

chrome/browser/chrome_content_browser_client.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 1719 matching lines @@
 #endif
       autofill::switches::kDisablePasswordGeneration,
       autofill::switches::kEnablePasswordGeneration,
       autofill::switches::kEnableSingleClickAutofill,
       autofill::switches::kEnableSuggestionsWithSubstringMatch,
       autofill::switches::kIgnoreAutocompleteOffForAutofill,
       autofill::switches::kLocalHeuristicsOnlyForPasswordGeneration,
 #if BUILDFLAG(ENABLE_EXTENSIONS)
       extensions::switches::kAllowHTTPBackgroundPage,
       extensions::switches::kAllowLegacyExtensionManifests,
-      extensions::switches::kEnableAppWindowControls,
       extensions::switches::kEnableEmbeddedExtensionOptions,
       extensions::switches::kEnableExperimentalExtensionApis,
       extensions::switches::kExtensionsOnChromeURLs,
       extensions::switches::kIsolateExtensions,
       extensions::switches::kNativeCrxBindings,
       extensions::switches::kWhitelistedExtensionID,
 #endif
       switches::kAllowInsecureLocalhost,
       switches::kAppsGalleryURL,
       switches::kCloudPrintURL,
@@ skipping 1623 matching lines @@
     RedirectNonUINonIOBrowserThreadsToTaskScheduler() {
   return variations::GetVariationParamValue(
              "BrowserScheduler", "RedirectNonUINonIOBrowserThreads") == "true";
 }
 
 // static
 void ChromeContentBrowserClient::SetDefaultQuotaSettingsForTesting(
     const storage::QuotaSettings* settings) {
   g_default_quota_settings = settings;
 }