Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/V8AbstractEventListener.h

Index: sky/engine/bindings/core/v8/V8AbstractEventListener.h
diff --git a/sky/engine/bindings/core/v8/V8AbstractEventListener.h b/sky/engine/bindings/core/v8/V8AbstractEventListener.h
deleted file mode 100644
index 6760fb5010b138b54de8fc951621c06994477a7f..0000000000000000000000000000000000000000
--- a/sky/engine/bindings/core/v8/V8AbstractEventListener.h
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * Copyright (C) 2006, 2007, 2008, 2009 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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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_V8ABSTRACTEVENTLISTENER_H_
-#define SKY_ENGINE_BINDINGS_CORE_V8_V8ABSTRACTEVENTLISTENER_H_
-
-#include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
-#include "sky/engine/bindings/core/v8/ScopedPersistent.h"
-#include "sky/engine/core/events/EventListener.h"
-#include "sky/engine/wtf/PassRefPtr.h"
-#include "sky/engine/wtf/RefCounted.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class Event;
-
-// There are two kinds of event listeners: HTML or non-HMTL. onload,
-// onfocus, etc (attributes) are always HTML event handler type; Event
-// listeners added by Window.addEventListener or
-// EventTargetNode::addEventListener are non-HTML type.
-//
-// Why does this matter?
-// WebKit does not allow duplicated HTML event handlers of the same type,
-// but ALLOWs duplicated non-HTML event handlers.
-class V8AbstractEventListener : public EventListener {
-public:
-    virtual ~V8AbstractEventListener();
-
-    static const V8AbstractEventListener* cast(const EventListener* listener)
-    {
-        return static_cast<const V8AbstractEventListener*>(listener);
-    }
-
-    static V8AbstractEventListener* cast(EventListener* listener)
-    {
-        return const_cast<V8AbstractEventListener*>(cast(const_cast<const EventListener*>(listener)));
-    }
-
-    // Implementation of EventListener interface.
-
-    virtual bool operator==(const EventListener& other) override { return this == &other; }
-
-    virtual void handleEvent(ExecutionContext*, Event*) override;
-
-    // Returns the listener object, either a function or an object.
-    v8::Local<v8::Object> getListenerObject(ExecutionContext* context)
-    {
-        // prepareListenerObject can potentially deref this event listener
-        // as it may attempt to compile a function (lazy event listener), get an error
-        // and invoke onerror callback which can execute arbitrary JS code.
-        // Protect this event listener to keep it alive.
-        RefPtr<V8AbstractEventListener> guard(this);
-        prepareListenerObject(context);
-        return m_listener.newLocal(m_isolate);
-    }
-
-    v8::Local<v8::Object> getExistingListenerObject()
-    {
-        return m_listener.newLocal(m_isolate);
-    }
-
-    // Provides access to the underlying handle for GC. Returned
-    // value is a weak handle and so not guaranteed to stay alive.
-    v8::Persistent<v8::Object>& existingListenerObjectPersistentHandle()
-    {
-        return m_listener.getUnsafe();
-    }
-
-    bool hasExistingListenerObject()
-    {
-        return !m_listener.isEmpty();
-    }
-
-    void clearListenerObject()
-    {
-        m_listener.clear();
-    }
-
-    v8::Isolate* isolate() const { return m_isolate; }
-    virtual DOMWrapperWorld& world() const { return scriptState()->world(); }
-    ScriptState* scriptState() const
-    {
-        ASSERT(m_scriptState);
-        return m_scriptState.get();
-    }
-    void setScriptState(ScriptState* scriptState) { m_scriptState = scriptState; }
-
-protected:
-    V8AbstractEventListener(ScriptState*);
-    V8AbstractEventListener(v8::Isolate*);
-
-    virtual void prepareListenerObject(ExecutionContext*) { }
-
-    void setListenerObject(v8::Handle<v8::Object>);
-
-    void invokeEventHandler(Event*, v8::Local<v8::Value> jsEvent);
-
-    // Get the receiver object to use for event listener call.
-    v8::Local<v8::Object> getReceiverObject(Event*);
-
-private:
-    virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value> jsevent, Event*) = 0;
-
-    static void setWeakCallback(const v8::WeakCallbackData<v8::Object, V8AbstractEventListener>&);
-
-    ScopedPersistent<v8::Object> m_listener;
-    RefPtr<ScriptState> m_scriptState;
-    v8::Isolate* m_isolate;
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_BINDINGS_CORE_V8_V8ABSTRACTEVENTLISTENER_H_