Log base::Features in Launch.FlagsAtStartup

components/flags_ui/flags_state.cc

 // Copyright 2015 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 "components/flags_ui/flags_state.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/callback.h"
@@ skipping 268 matching lines @@
     const auto& entry_it = name_to_switch_map.find(entry_name);
     DCHECK(entry_it != name_to_switch_map.end());
 
     const SwitchEntry& entry = entry_it->second;
     if (!entry.switch_name.empty())
       switches.insert("--" + entry.switch_name);
   }
   return switches;
 }
 
+std::set<std::string> FlagsState::GetFeaturesFromFlags(
+    FlagsStorage* flags_storage) {
+  std::set<std::string> enabled_entries;
+  std::map<std::string, SwitchEntry> name_to_switch_map;
+  GenerateFlagsToSwitchesMapping(flags_storage, &enabled_entries,
+                                 &name_to_switch_map);
+
+  std::set<std::string> features;
+  for (const std::string& entry_name : enabled_entries) {
+    const auto& entry_it = name_to_switch_map.find(entry_name);
+    DCHECK(entry_it != name_to_switch_map.end());
+
+    const SwitchEntry& entry = entry_it->second;
+    if (!entry.feature_name.empty()) {
+      if (entry.feature_state)
+        features.insert(entry.feature_name + ":enabled");
+      else
+        features.insert(entry.feature_name + ":disabled");
+    }
+  }
+  return features;
+}
+
 bool FlagsState::IsRestartNeededToCommitChanges() {
   return needs_restart_;
 }
 
 void FlagsState::SetFeatureEntryEnabled(FlagsStorage* flags_storage,
                                         const std::string& internal_name,
                                         bool enable) {
   size_t at_index = internal_name.find(testing::kMultiSeparator);
   if (at_index != std::string::npos) {
     DCHECK(enable);
@@ skipping 450 matching lines @@
                               state == FeatureEntry::FeatureState::ENABLED,
                               name_to_switch_map);
           }
         }
         break;
     }
   }
 }
 
 }  // namespace flags_ui