Allow origin trials to be enabled by script

third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h

Index: third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h b/third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h
index dd345df3a033686b8a8a49f20ed2d21f5974f2d0..ec82fc13888fbe0c225831d6b434717bef026da2 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h
+++ b/third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h
@@ -87,6 +87,15 @@ class CORE_EXPORT V8PerContextData final {
 
   v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*);
 
+  // Gets the constructor and prototype for a type, if they have already been
+  // created. Returns true if they exist, and sets the existing values in
+  // |prototypeObject| and |interfaceObject|. Otherwise, returns false, and the
+  // values are set to empty objects (non-null).
+  bool getExistingConstructorAndPrototypeForType(
+      const WrapperTypeInfo*,
+      v8::Local<v8::Object>* prototypeObject,
+      v8::Local<v8::Function>* interfaceObject);
+
   void addCustomElementBinding(std::unique_ptr<V0CustomElementBinding>);
 
   V8DOMActivityLogger* activityLogger() const { return m_activityLogger; }