Mac Video Capture: expose --enable-avfoundation as tristate in chrome://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 471 matching lines @@
 };
 
 const Experiment::Choice kEnableDropSyncCredentialChoices[] = {
   { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", ""},
   { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
     password_manager::switches::kEnableDropSyncCredential, "" },
   { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
     password_manager::switches::kDisableDropSyncCredential, "" },
 };
 
+#if defined(OS_MACOSX)
+const Experiment::Choice kEnableAVFoundationChoices[] = {
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT, "", "" },
+  { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED, switches::kEnableAVFoundation, ""},
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, switches::kForceQTKit, ""}
+};
+#endif
+
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the experiment is the internal name. If you'd like to
 // gather statistics about the usage of your flag, you should append a marker
 // comment to the end of the feature name, like so:
 //   "my-special-feature",  // FLAGS:RECORD_UMA
 //
 // After doing that, run
 //   tools/metrics/actions/extract_actions.py
 // to add the metric to actions.xml (which will enable UMA to record your
@@ skipping 705 matching lines @@
     kOsDesktop,
     MULTI_VALUE_TYPE(kEnableSyncAppListChoices)
   },
 #endif
 #if defined(OS_MACOSX)
   {
     "enable-avfoundation",
     IDS_FLAGS_ENABLE_AVFOUNDATION_NAME,
     IDS_FLAGS_ENABLE_AVFOUNDATION_DESCRIPTION,
     kOsMac,
-    SINGLE_VALUE_TYPE(switches::kEnableAVFoundation)
+    MULTI_VALUE_TYPE(kEnableAVFoundationChoices)
   },
 #endif
   {
     "impl-side-painting",
     IDS_FLAGS_IMPL_SIDE_PAINTING_NAME,
     IDS_FLAGS_IMPL_SIDE_PAINTING_DESCRIPTION,
     kOsAll,
     MULTI_VALUE_TYPE(kImplSidePaintingChoices)
   },
   {
@@ skipping 1214 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags