Remove unreleased web app frame code from ChromeOS

chrome/browser/about_flags.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/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1366 matching lines @@
 #endif  // OS_ANDROID
     {"enable-hotword-hardware", IDS_FLAGS_EXPERIMENTAL_HOTWORD_HARDWARE_NAME,
      IDS_FLAGS_EXPERIMENTAL_HOTWORD_HARDWARE_DESCRIPTION, kOsCrOS,
      SINGLE_VALUE_TYPE(switches::kEnableExperimentalHotwordHardware)},
 #if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-embedded-extension-options",
      IDS_FLAGS_EMBEDDED_EXTENSION_OPTIONS_NAME,
      IDS_FLAGS_EMBEDDED_EXTENSION_OPTIONS_DESCRIPTION, kOsDesktop,
      SINGLE_VALUE_TYPE(extensions::switches::kEnableEmbeddedExtensionOptions)},
 #endif  // ENABLE_EXTENSIONS
-#if defined(USE_ASH)
-    {"enable-web-app-frame", IDS_FLAGS_WEB_APP_FRAME_NAME,
-     IDS_FLAGS_WEB_APP_FRAME_DESCRIPTION, kOsWin | kOsCrOS,
-     SINGLE_VALUE_TYPE(switches::kEnableWebAppFrame)},
-#endif  // USE_ASH
     {"drop-sync-credential", IDS_FLAGS_DROP_SYNC_CREDENTIAL_NAME,
      IDS_FLAGS_DROP_SYNC_CREDENTIAL_DESCRIPTION, kOsAll,
      FEATURE_VALUE_TYPE(password_manager::features::kDropSyncCredential)},
 #if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-extension-action-redesign",
      IDS_FLAGS_EXTENSION_ACTION_REDESIGN_NAME,
      IDS_FLAGS_EXTENSION_ACTION_REDESIGN_DESCRIPTION, kOsDesktop,
      SINGLE_VALUE_TYPE(extensions::switches::kEnableExtensionActionRedesign)},
 #endif  // ENABLE_EXTENSIONS
 #if !defined(OS_ANDROID)
@@ skipping 909 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags