[Origin Trials] Support updates of disabled token list

chrome/common/pref_names.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/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "chrome/common/pref_font_webkit_names.h"
@@ skipping 2372 matching lines @@
     "media_router.tab_mirroring_sources";
 #endif
 
 // The base64-encoded representation of the public key to use to validate origin
 // trial token signatures.
 const char kOriginTrialPublicKey[] = "origin_trials.public_key";
 
 // A list of origin trial features to disable by policy.
 const char kOriginTrialDisabledFeatures[] = "origin_trials.disabled_features";
 
+// A list of origin trial tokens to disable by policy.
+const char kOriginTrialDisabledTokens[] = "origin_trials.disabled_tokens";
+
 // Policy that indicates the state of updates for the binary components.
 const char kComponentUpdatesEnabled[] =
     "component_updates.component_updates_enabled";
 
 #if defined(OS_ANDROID)
 // Whether the search geolocation disclosure has been dismissed by the user.
 const char kSearchGeolocationDisclosureDismissed[] =
     "search_geolocation_disclosure.dismissed";
 
 // How many times the search geolocation disclosure has been shown.
@@ skipping 117 matching lines @@
 // settings.
 const char kSettingsResetPromptLastTriggeredForStartupUrls[] =
     "settings_reset_prompt.last_triggered_for_startup_urls";
 
 // Timestamp of the last time the settings reset prompt was shown during the
 // current prompt wave asking the user if they want to restore their homepage.
 const char kSettingsResetPromptLastTriggeredForHomepage[] =
     "settings_reset_prompt.last_triggered_for_homepage";
 
 }  // namespace prefs