Add flags for permission prompt experiments.

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 2048 matching lines @@
     {"enumerate-audio-devices", IDS_FLAGS_ENABLE_ENUMERATING_AUDIO_DEVICES_NAME,
      IDS_FLAGS_ENABLE_ENUMERATING_AUDIO_DEVICES_DESCRIPTION, kOsCrOS,
      FEATURE_VALUE_TYPE(features::kEnumerateAudioDevices)},
 #endif  // OS_CHROMEOS
 #if !defined(OS_ANDROID)
     {"enable-default-media-session",
      IDS_FLAGS_ENABLE_DEFAULT_MEDIA_SESSION_NAME,
      IDS_FLAGS_ENABLE_DEFAULT_MEDIA_SESSION_DESCRIPTION, kOsDesktop,
      MULTI_VALUE_TYPE(kEnableDefaultMediaSessionChoices)},
 #endif  // !OS_ANDROID
+#if defined(OS_ANDROID)
+    {"modal-permission-prompts", IDS_FLAGS_MODAL_PERMISSION_PROMPTS_NAME,
+     IDS_FLAGS_MODAL_PERMISSION_PROMPTS_DESCRIPTION, kOsAndroid,
+     FEATURE_VALUE_TYPE(features::kModalPermissionPrompts)},
+#endif
+#if !defined(OS_MACOSX)
+    {"permission-prompt-persistence-toggle",
+     IDS_FLAGS_PERMISSION_PROMPT_PERSISTENCE_TOGGLE_NAME,
+     IDS_FLAGS_PERMISSION_PROMPT_PERSISTENCE_TOGGLE_DESCRIPTION,
+     kOsWin | kOsCrOS | kOsLinux | kOsAndroid,
+     FEATURE_VALUE_TYPE(
+         features::kDisplayPersistenceToggleInPermissionPrompts)},
+#endif
 #if defined(ENABLE_PRINT_PREVIEW)
     {"print-scaling", IDS_FLAGS_PRINT_SCALING_NAME,
      IDS_FLAGS_PRINT_SCALING_DESCRIPTION, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kPrintScaling)},
 #endif
     // 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.
 };
 
@@ 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