[v8 gc] Introduce a base class for all objects that can have pending activity

third_party/WebKit/Source/modules/webmidi/MIDIPort.h

Index: third_party/WebKit/Source/modules/webmidi/MIDIPort.h
diff --git a/third_party/WebKit/Source/modules/webmidi/MIDIPort.h b/third_party/WebKit/Source/modules/webmidi/MIDIPort.h
index e67c069d7e72eee589ef37bfc0d035a769985659..ce1806032ade44d769f9eea7ee16c5c88ecd1175 100644
--- a/third_party/WebKit/Source/modules/webmidi/MIDIPort.h
+++ b/third_party/WebKit/Source/modules/webmidi/MIDIPort.h
@@ -31,6 +31,7 @@
 #ifndef MIDIPort_h
 #define MIDIPort_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/ExceptionCode.h"
@@ -42,7 +43,7 @@ namespace blink {
 
 class MIDIAccess;
 
-class MIDIPort : public RefCountedGarbageCollectedEventTargetWithInlineData<MIDIPort>, public ActiveDOMObject {
+class MIDIPort : public RefCountedGarbageCollectedEventTargetWithInlineData<MIDIPort>, public ActiveScriptWrappable, public ActiveDOMObject {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(MIDIPort);
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MIDIPort);
@@ -84,8 +85,10 @@ public:
     const AtomicString& interfaceName() const override { return EventTargetNames::MIDIPort; }
     ExecutionContext* getExecutionContext() const final;
 
+    // ActiveScriptWrappable
+    bool hasPendingActivity() const final;
+
     // ActiveDOMObject
-    bool hasPendingActivity() const override;
     void stop() override;
 
 protected: