Add enable flag for pointer events in about://flags

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 2105 matching lines @@
     {"enable-unsafe-es3-apis",
      IDS_FLAGS_WEBGL2_NAME,
      IDS_FLAGS_WEBGL2_DESCRIPTION,
      kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableUnsafeES3APIs)},
     {"enable-webfonts-intervention",
       IDS_FLAGS_ENABLE_WEBFONTS_INTERVENTION_NAME,
       IDS_FLAGS_ENABLE_WEBFONTS_INTERVENTION_DESCRIPTION,
       kOsAll,
       FEATURE_VALUE_TYPE(features::kWebFontsIntervention)},
+    {"enable-pointer-events",  // FLAGS:RECORD_UMA
+      IDS_FLAGS_EXPERIMENTAL_POINTER_EVENT_NAME,
+      IDS_FLAGS_EXPERIMENTAL_POINTER_EVENT_DESCRIPTION,
+      kOsAll,
+      FEATURE_VALUE_TYPE(features::kPointerEvents)},
     // NOTE: Adding new command-line switches requires adding corresponding
     // entries to enum "LoginCustomFlags" in histograms.xml. See note in
     // histograms.xml and don't forget to run AboutFlagsHistogramTest unit test.
 };
 
 class FlagsStateSingleton {
  public:
   FlagsStateSingleton()
       : flags_state_(kFeatureEntries, arraysize(kFeatureEntries)) {}
   ~FlagsStateSingleton() {}
@@ skipping 193 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags