Add disabled origin trial feature list

content/common/origin_trials/trial_token_validator.cc

Index: content/common/origin_trials/trial_token_validator.cc
diff --git a/content/common/origin_trials/trial_token_validator.cc b/content/common/origin_trials/trial_token_validator.cc
index f9261fe19a30804e5711e6f5dc971ec3870666cb..e19e968983dedd4659a6394f703cf36d6711c63c 100644
--- a/content/common/origin_trials/trial_token_validator.cc
+++ b/content/common/origin_trials/trial_token_validator.cc
@@ -15,9 +15,12 @@ blink::WebOriginTrialTokenStatus TrialTokenValidator::ValidateToken(
     const std::string& token,
     const url::Origin& origin,
     base::StringPiece feature_name) {
+  const ContentClient* content_client = GetContentClient();
+  if (content_client->IsOriginTrialFeatureDisabled(feature_name))
+    return blink::WebOriginTrialTokenStatus::FeatureDisabled;
+
   // TODO(iclelland): Allow for multiple signing keys, and iterate over all
   // active keys here. https://crbug.com/543220
-  ContentClient* content_client = GetContentClient();
   base::StringPiece public_key = content_client->GetOriginTrialPublicKey();
   if (public_key.empty()) {
     return blink::WebOriginTrialTokenStatus::NotSupported;