Revert of Add support for origin trials in workers.

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

Index: third_party/WebKit/Source/core/origin_trials/OriginTrialContext.cpp
diff --git a/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.cpp b/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.cpp
index 50122ea932ea9caa28d19c54541910d02b25ec3e..f4f37fdba24811f0ecf2c555529aede3030cabc1 100644
--- a/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.cpp
+++ b/third_party/WebKit/Source/core/origin_trials/OriginTrialContext.cpp
@@ -87,10 +87,10 @@
 }
 
 // static
-OriginTrialContext* OriginTrialContext::from(ExecutionContext* host, CreateMode create)
+OriginTrialContext* OriginTrialContext::from(ExecutionContext* host)
 {
     OriginTrialContext* originTrials = static_cast<OriginTrialContext*>(Supplement<ExecutionContext>::from(host, supplementName()));
-    if (!originTrials && create == CreateIfNotExists) {
+    if (!originTrials) {
         originTrials = new OriginTrialContext(host);
         Supplement<ExecutionContext>::provideTo(*host, supplementName(), originTrials);
     }
@@ -122,36 +122,16 @@
     std::unique_ptr<Vector<String>> tokens(parseHeaderValue(headerValue));
     if (!tokens)
         return;
-    addTokens(host, parseHeaderValue(headerValue).get());
-}
-
-// static
-void OriginTrialContext::addTokens(ExecutionContext* host, const Vector<String>* tokens)
-{
-    if (!tokens || tokens->isEmpty())
-        return;
-    from(host)->addTokens(*tokens);
-}
-
-// static
-std::unique_ptr<Vector<String>> OriginTrialContext::getTokens(ExecutionContext* host)
-{
-    OriginTrialContext* context = from(host, DontCreateIfNotExists);
-    if (!context || context->m_tokens.isEmpty())
-        return nullptr;
-    return std::unique_ptr<Vector<String>>(new Vector<String>(context->m_tokens));
-}
-
+    OriginTrialContext* context = from(host);
+    for (const String& token : *tokens) {
+        context->addToken(token);
+    }
+}
 
 void OriginTrialContext::addToken(const String& token)
 {
     if (!token.isEmpty())
         m_tokens.append(token);
-}
-
-void OriginTrialContext::addTokens(const Vector<String>& tokens)
-{
-    m_tokens.appendVector(tokens);
 }
 
 bool OriginTrialContext::isFeatureEnabled(const String& featureName, String* errorMessage, WebTrialTokenValidator* validator)