cros: Add flag that allows user to enable stylus tools.

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 2182 matching lines @@
      IDS_FLAGS_SHOW_ARC_FILES_APP_DESCRIPTION, kOsCrOS,
      FEATURE_VALUE_TYPE(arc::kShowArcFilesAppFeature)},
 #endif // defined(OS_CHROMEOS)
 
 #if defined(OS_ANDROID)
     {"aia-fetching", IDS_FLAGS_AIA_FETCHING_NAME,
      IDS_FLAGS_AIA_FETCHING_DESCRIPTION, kOsAndroid,
      FEATURE_VALUE_TYPE(net::CertVerifyProcAndroid::kAIAFetchingFeature)},
 #endif
 
+#if defined(OS_CHROMEOS)
+    {"force-enable-stylus-tools", IDS_FLAGS_FORCE_ENABLE_STYLUS_TOOLS_NAME,
+     IDS_FLAGS_FORCE_ENABLE_STYLUS_TOOLS_DESCRIPTION, kOsCrOS,
+     SINGLE_VALUE_TYPE(ash::switches::kAshForceEnablePalette)},
+#endif // defined(OS_CHROMEOS)
+
     // 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 188 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags