Add oom tab killing and the about:discards page on linux

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 2038 matching lines @@
      IDS_FLAGS_V8_CACHE_OPTIONS_DESCRIPTION,
      kOsAll,
      MULTI_VALUE_TYPE(kV8CacheOptionsChoices)},
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
     {"enable-md-downloads",
      IDS_FLAGS_ENABLE_MATERIAL_DESIGN_DOWNLOADS_NAME,
      IDS_FLAGS_ENABLE_MATERIAL_DESIGN_DOWNLOADS_DESCRIPTION,
      kOsDesktop,
      SINGLE_VALUE_TYPE(switches::kEnableMaterialDesignDownloads)},
 #endif
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_LINUX)
     {"enable-tab-discarding",
      IDS_FLAGS_ENABLE_TAB_DISCARDING_NAME,
      IDS_FLAGS_ENABLE_TAB_DISCARDING_DESCRIPTION,
-     kOsWin,
+     kOsWin || kOsLinux,
      SINGLE_VALUE_TYPE(switches::kEnableTabDiscarding)},
 #endif
     {"enable-clear-browsing-data-counters",
      IDS_FLAGS_ENABLE_CLEAR_BROWSING_DATA_COUNTERS_NAME,
      IDS_FLAGS_ENABLE_CLEAR_BROWSING_DATA_COUNTERS_DESCRIPTION,
      kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableClearBrowsingDataCounters)
     },
 #if defined(ENABLE_TASK_MANAGER)
     {"enable-new-task-manager",
@@ skipping 638 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags