Add disabled origin trial feature list

chrome/browser/origin_trials/origin_trial_controller.cc

Index: chrome/browser/origin_trials/origin_trial_controller.cc
diff --git a/chrome/browser/origin_trials/origin_trial_controller.cc b/chrome/browser/origin_trials/origin_trial_controller.cc
index 519bfba95fccb5c4778c601a1625ef03defee236..593d53c69bb34d1f223aebc39f82e3f57946dda9 100644
--- a/chrome/browser/origin_trials/origin_trial_controller.cc
+++ b/chrome/browser/origin_trials/origin_trial_controller.cc
@@ -12,6 +12,8 @@
 
 const char OriginTrialController::kFieldTrialName[] = "OriginTrials";
 const char OriginTrialController::kPublicKeyFieldName[] = "PublicKey";
+const char OriginTrialController::kDisabledFeaturesFieldName[] =
+    "DisabledFeatures";
 
 // static
 void OriginTrialController::UpdateCommandLineFromFieldTrials(
@@ -25,4 +27,9 @@ void OriginTrialController::UpdateCommandLineFromFieldTrials(
     command_line->AppendSwitchASCII(switches::kOriginTrialPublicKey,
                                     override_public_key);
   }
+  std::string disabled_feature_list = field_params[kDisabledFeaturesFieldName];
+  if (!disabled_feature_list.empty()) {
+    command_line->AppendSwitchASCII(switches::kOriginTrialDisabledFeatures,
+                                    disabled_feature_list);
+  }
 }