Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/V8MutationCallback.h

Index: sky/engine/bindings/core/v8/V8MutationCallback.h
diff --git a/sky/engine/bindings/core/v8/V8MutationCallback.h b/sky/engine/bindings/core/v8/V8MutationCallback.h
deleted file mode 100644
index a9f99c6b95e3dba4f018bd33d6692a941deda58f..0000000000000000000000000000000000000000
--- a/sky/engine/bindings/core/v8/V8MutationCallback.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * 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:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY 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 SKY_ENGINE_BINDINGS_CORE_V8_V8MUTATIONCALLBACK_H_
-#define SKY_ENGINE_BINDINGS_CORE_V8_V8MUTATIONCALLBACK_H_
-
-#include "sky/engine/bindings/core/v8/ActiveDOMCallback.h"
-#include "sky/engine/bindings/core/v8/ScopedPersistent.h"
-#include "sky/engine/bindings/core/v8/ScriptState.h"
-#include "sky/engine/core/dom/MutationCallback.h"
-#include "sky/engine/wtf/OwnPtr.h"
-#include "sky/engine/wtf/RefPtr.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class ExecutionContext;
-
-class V8MutationCallback final : public MutationCallback, public ActiveDOMCallback {
-public:
-    static PassOwnPtr<V8MutationCallback> create(v8::Handle<v8::Function> callback, v8::Handle<v8::Object> owner, ScriptState* scriptState)
-    {
-        return adoptPtr(new V8MutationCallback(callback, owner, scriptState));
-    }
-
-    virtual void call(const Vector<RefPtr<MutationRecord> >&, MutationObserver*) override;
-    virtual ExecutionContext* executionContext() const override { return ContextLifecycleObserver::executionContext(); }
-
-private:
-    V8MutationCallback(v8::Handle<v8::Function>, v8::Handle<v8::Object>, ScriptState*);
-
-    static void setWeakCallback(const v8::WeakCallbackData<v8::Function, V8MutationCallback>&);
-
-    ScopedPersistent<v8::Function> m_callback;
-    RefPtr<ScriptState> m_scriptState;
-};
-
-}
-
-#endif  // SKY_ENGINE_BINDINGS_CORE_V8_V8MUTATIONCALLBACK_H_