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 262 matching lines @@
   std::map<std::string, SwitchEntry> name_to_switch_map;
   GenerateFlagsToSwitchesMapping(flags_storage, &enabled_entries,
                                  &name_to_switch_map);
 
   std::set<std::string> switches;
   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.switch_name.empty())
-      switches.insert("--" + entry.switch_name);
+    if (!entry.switch_name.empty()) {

[Alexei Svitkine (slow), 2016/09/15 19:59:18]

Nit: No {}'s if the body is a single line. Please also remove from line 288.

[lawrencewu, 2016/09/16 15:34:56]

Done.

+      switches.insert(entry.switch_name);
+    }
+
+    if (!entry.feature_name.empty()) {
+      if (entry.feature_state) {
+        switches.insert(entry.feature_name + ":enabled");
+      } else {
+        switches.insert(entry.feature_name + ":disabled");
+      }
+    }
   }
   return switches;
 }
 
 bool FlagsState::IsRestartNeededToCommitChanges() {
   return needs_restart_;
 }
 
 void FlagsState::SetFeatureEntryEnabled(FlagsStorage* flags_storage,
                                         const std::string& internal_name,
@@ skipping 454 matching lines @@
                               state == FeatureEntry::FeatureState::ENABLED,
                               name_to_switch_map);
           }
         }
         break;
     }
   }
 }
 
 }  // namespace flags_ui