| Index: third_party/WebKit/Source/core/dom/MessagePort.cpp | 
| diff --git a/third_party/WebKit/Source/core/dom/MessagePort.cpp b/third_party/WebKit/Source/core/dom/MessagePort.cpp | 
| index 44b3a663ae50d39e2cb634121b774eaa2deb7430..fca2b56427bd6fd9cf1479770643a502f63b39b0 100644 | 
| --- a/third_party/WebKit/Source/core/dom/MessagePort.cpp | 
| +++ b/third_party/WebKit/Source/core/dom/MessagePort.cpp | 
| @@ -52,7 +52,7 @@ MessagePort* MessagePort::create(ExecutionContext& executionContext) { | 
|  | 
| MessagePort::MessagePort(ExecutionContext& executionContext) | 
| : ActiveScriptWrappable(this), | 
| -      ActiveDOMObject(&executionContext), | 
| +      SuspendableObject(&executionContext), | 
| m_started(false), | 
| m_closed(false) {} | 
|  | 
| @@ -291,7 +291,7 @@ MessagePortArray* MessagePort::entanglePorts( | 
| } | 
|  | 
| DEFINE_TRACE(MessagePort) { | 
| -  ActiveDOMObject::trace(visitor); | 
| +  SuspendableObject::trace(visitor); | 
| EventTargetWithInlineData::trace(visitor); | 
| } | 
|  | 
|  |