Remove the flag --disable-hide-inactive-stacked-tab-close-buttons

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 1642 matching lines @@
     {"enable-print-preview-register-promos",
      flag_descriptions::kPrintPreviewRegisterPromosName,
      flag_descriptions::kPrintPreviewRegisterPromosDescription, kOsDesktop,
      SINGLE_VALUE_TYPE(switches::kEnablePrintPreviewRegisterPromos)},
 #endif  // BUILDFLAG(ENABLE_SERVICE_DISCOVERY)
 #if defined(OS_WIN)
     {"enable-cloud-print-xps", flag_descriptions::kCloudPrintXpsName,
      flag_descriptions::kCloudPrintXpsDescription, kOsWin,
      SINGLE_VALUE_TYPE(switches::kEnableCloudPrintXps)},
 #endif  // OS_WIN
-#if defined(TOOLKIT_VIEWS)
-    {"disable-hide-inactive-stacked-tab-close-buttons",
-     flag_descriptions::kHideInactiveStackedTabCloseButtonsName,
-     flag_descriptions::kHideInactiveStackedTabCloseButtonsDescription,
-     kOsCrOS | kOsWin | kOsLinux,
-     SINGLE_DISABLE_VALUE_TYPE(
-         switches::kDisableHideInactiveStackedTabCloseButtons)},
-#endif  // TOOLKIT_VIEWS
 #if BUILDFLAG(ENABLE_SPELLCHECK)
     {"enable-spelling-feedback-field-trial",
      flag_descriptions::kSpellingFeedbackFieldTrialName,
      flag_descriptions::kSpellingFeedbackFieldTrialDescription, kOsAll,
      SINGLE_VALUE_TYPE(
          spellcheck::switches::kEnableSpellingFeedbackFieldTrial)},
 #endif  // ENABLE_SPELLCHECK
     {"enable-webgl-draft-extensions",
      flag_descriptions::kWebglDraftExtensionsName,
      flag_descriptions::kWebglDraftExtensionsDescription, kOsAll,
@@ skipping 1636 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags