Allow origin trials to be enabled by script

third_party/WebKit/Source/core/origin_trials/OriginTrialContext.h

Index: third_party/WebKit/Source/core/origin_trials/OriginTrialContext.h
diff --git a/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.h b/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.h
index 51f5bf3ead1ee0bbdf0c14be0545592cfcd1e15f..9efd759e56becca733d9c870154973f252e883f7 100644
--- a/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.h
+++ b/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.h
@@ -82,11 +82,14 @@ class CORE_EXPORT OriginTrialContext final
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  void validateToken(const String& token);
+  // Validate the trial token, and return true if valid. If valid, the trial
+  // named in the token is also added to the list of enabled trials.
+  bool validateToken(const String& token);
 
   Member<ExecutionContext> m_host;
   Vector<String> m_tokens;
   HashSet<String> m_enabledTrials;
+  HashSet<String> m_installedTrials;
   WebTrialTokenValidator* m_trialTokenValidator;
 };