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

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

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 133 matching lines @@
         isolate->SetObjectGroupId(v8::Persistent<v8::Value>::Cast(m_wrapper), groupId);
     }
 
     void setReference(const v8::Persistent<v8::Object>& parent, v8::Isolate* isolate)
     {
         isolate->SetReference(parent, m_wrapper);
     }
 
     bool containsWrapper() const { return !m_wrapper.IsEmpty(); }
 
-    virtual bool hasPendingActivity() const;
-
 #if !ENABLE(OILPAN)
 protected:
     virtual ~ScriptWrappable()
     {
         // We must not get deleted as long as we contain a wrapper. If this happens, we screwed up ref
         // counting somewhere. Crash here instead of crashing during a later gc cycle.
         RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(!containsWrapper());
     }
 #endif
     // With Oilpan we don't need a ScriptWrappable destructor.
@@ skipping 98 matching lines @@
 // in X's cpp code, and instantiate X, i.e. "template class X;".
 #define DECLARE_WRAPPERTYPEINFO() \
 public: \
     const WrapperTypeInfo* wrapperTypeInfo() const override; \
 private: \
     typedef void end_of_define_wrappertypeinfo_not_reached_t
 
 } // namespace blink
 
 #endif // ScriptWrappable_h