Add a feature to display a persistence toggle for permission prompts on Android.

chrome/common/chrome_features.cc

 // Copyright 2016 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/chrome_features.h"
 
 namespace features {
 
 // All features in alphabetical order.
 
@@ skipping 30 matching lines @@
 
 // Experiment to disable small cross-origin content. (http://crbug.com/608886)
 const base::Feature kBlockSmallContent{"BlockSmallPluginContent",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Fixes for browser hang bugs are deployed in a field trial in order to measure
 // their impact. See crbug.com/478209.
 const base::Feature kBrowserHangFixesExperiment{
     "BrowserHangFixesExperiment", base::FEATURE_DISABLED_BY_DEFAULT};
 
+// Experiment to display a toggle allowing users to opt-out of persisting a
+// Grant or Deny decision in a permission prompt.
+const base::Feature kDisplayPersistenceToggleInPermissionPrompts{
+    "DisplayPersistenceToggleInPermissionPrompts",
+    base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Enables Expect CT reporting, which sends reports for opted-in sites
 // that don't serve sufficient Certificate Transparency information.
 const base::Feature kExpectCTReporting{"ExpectCTReporting",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
 
 // An experimental fullscreen prototype that allows pages to map browser and
 // system-reserved keyboard shortcuts.
 const base::Feature kExperimentalKeyboardLockUI{
     "ExperimentalKeyboardLockUI", base::FEATURE_DISABLED_BY_DEFAULT};
 
@@ skipping 62 matching lines @@
 // Enables or disables the opt-in IME menu in the language settings page.
 const base::Feature kOptInImeMenu{"OptInImeMenu",
                                   base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables or disables PIN quick unlock settings integration.
 const base::Feature kQuickUnlockPin{"QuickUnlockPin",
                                     base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace features