Collect UMA data for Origin Trials

third_party/WebKit/public/platform/WebTrialTokenValidator.h

 // Copyright 2016 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.
 
-#ifndef WebTrialTokenValidator_h
-#define WebTrialTokenValidator_h
+#ifndef THIRD_PARTY_WEBKIT_PUBLIC_PLATFORM_WEBTRIALTOKENVALIDATOR_H_
+#define THIRD_PARTY_WEBKIT_PUBLIC_PLATFORM_WEBTRIALTOKENVALIDATOR_H_
 
 #include "public/platform/WebCallbacks.h"
 #include "public/platform/WebSecurityOrigin.h"
 #include "public/platform/WebString.h"
 
 namespace blink {
 
 // This interface abstracts the task of validating a token for an experimental
 // feature. Experimental features can be turned on and off at runtime for a
 // specific renderer, depending on the presence of a valid token provided by
 // the origin.
 //
-// More documentation on the design of the experimental framework is at
-// https://docs.google.com/document/d/1qVP2CK1lbfmtIJRIm6nwuEFFhGhYbtThLQPo3CSTtmg
+// For more information, see https://github.com/jpchase/OriginTrials.
 
 class WebTrialTokenValidator {
 public:
+    enum TokenValidationResult {
+        TokenValidationResultSuccess = 0,
+        TokenValidationResultExpired,
+        TokenValidationResultInvalidSignature,
+        TokenValidationResultMalformed,
+        TokenValidationResultNotSupported,
+        TokenValidationResultWrongFeature,
+        TokenValidationResultWrongOrigin,
+    };
+
     virtual ~WebTrialTokenValidator() {}
 
     // Returns true if the given token is valid for the specified origin and
     // feature name.
-    virtual bool validateToken(const WebString& token, const WebSecurityOrigin&, const WebString& featureName) = 0;
+    virtual TokenValidationResult validateToken(
+        const WebString& token,
+        const WebSecurityOrigin&,
+        const WebString& featureName)
+        = 0;
 };
 
 } // namespace blink
 
-#endif // WebTrialTokenValidator_h
+#endif // THIRD_PARTY_WEBKIT_PUBLIC_PLATFORM_WEBTRIALTOKENVALIDATOR_H_