Remove ContextLifecycleObserver from V8V0CustomElementLifecycleCallbacks

third_party/WebKit/Source/bindings/core/v8/V8V0CustomElementLifecycleCallbacks.h

 /*
  * Copyright (C) 2013 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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef V8V0CustomElementLifecycleCallbacks_h
 #define V8V0CustomElementLifecycleCallbacks_h
 
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/ScriptState.h"
-#include "core/dom/ContextLifecycleObserver.h"
 #include "core/dom/custom/V0CustomElementLifecycleCallbacks.h"
 #include "wtf/PassRefPtr.h"
 #include <memory>
 #include <v8.h>
 
 namespace blink {
 
 class V0CustomElementLifecycleCallbacks;
 class Element;
 class V8PerContextData;
 
 class V8V0CustomElementLifecycleCallbacks final
-    : public V0CustomElementLifecycleCallbacks,
-      public ContextLifecycleObserver {
-  USING_GARBAGE_COLLECTED_MIXIN(V8V0CustomElementLifecycleCallbacks);
-
+    : public V0CustomElementLifecycleCallbacks {
  public:
   static V8V0CustomElementLifecycleCallbacks* create(
       ScriptState*,
       v8::Local<v8::Object> prototype,
       v8::MaybeLocal<v8::Function> created,
       v8::MaybeLocal<v8::Function> attached,
       v8::MaybeLocal<v8::Function> detached,
       v8::MaybeLocal<v8::Function> attributeChanged);
 
   ~V8V0CustomElementLifecycleCallbacks() override;
@@ skipping 27 matching lines @@
   ScopedPersistent<v8::Object> m_prototype;
   ScopedPersistent<v8::Function> m_created;
   ScopedPersistent<v8::Function> m_attached;
   ScopedPersistent<v8::Function> m_detached;
   ScopedPersistent<v8::Function> m_attributeChanged;
 };
 
 }  // namespace blink
 
 #endif  // V8V0CustomElementLifecycleCallbacks_h