Collect UMA data for Origin Trials

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 6eef75a5e9a40be7f7cf5b3a3d594dc8e789f1b7..863d444a6e5258ea880547b501ac7bc855becbe2 100644
--- a/content/common/origin_trials/trial_token_validator.cc
+++ b/content/common/origin_trials/trial_token_validator.cc
@@ -10,20 +10,26 @@
 
 namespace content {
 
-bool TrialTokenValidator::ValidateToken(const std::string& token,
-                                        const url::Origin& origin,
-                                        base::StringPiece feature_name) {
+TrialTokenStatus TrialTokenValidator::ValidateToken(
+    const std::string& token,
+    const url::Origin& origin,
+    base::StringPiece feature_name) {
   // 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 false;
+    return TRIAL_TOKEN_STATUS_NOT_SUPPORTED;
   }
-  std::unique_ptr<TrialToken> trial_token = TrialToken::From(token, public_key);
 
-  return trial_token &&
-         trial_token->IsValidForFeature(origin, feature_name,
+  TrialTokenStatus status;
+  std::unique_ptr<TrialToken> trial_token =
+      TrialToken::From(token, public_key, &status);
+  if (status != TRIAL_TOKEN_STATUS_SUCCESS) {
+    return status;
+  }
+
+  return trial_token->IsValidForFeature(origin, feature_name,
                                         base::Time::Now());
 }