Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/V8EventListenerList.h

Index: sky/engine/bindings/core/v8/V8EventListenerList.h
diff --git a/sky/engine/bindings/core/v8/V8EventListenerList.h b/sky/engine/bindings/core/v8/V8EventListenerList.h
deleted file mode 100644
index dc91811476d361fb7e603cc00e2776163a6baa68..0000000000000000000000000000000000000000
--- a/sky/engine/bindings/core/v8/V8EventListenerList.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (C) 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_V8EVENTLISTENERLIST_H_
-#define SKY_ENGINE_BINDINGS_CORE_V8_V8EVENTLISTENERLIST_H_
-
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/bindings/core/v8/V8EventListener.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class LocalFrame;
-
-enum ListenerLookupType {
-    ListenerFindOnly,
-    ListenerFindOrCreate,
-};
-
-// This is a container for V8EventListener objects that uses hidden properties of v8::Object to speed up lookups.
-class V8EventListenerList {
-public:
-    static PassRefPtr<V8EventListener> findWrapper(v8::Local<v8::Value> value, ScriptState* scriptState)
-    {
-        ASSERT(scriptState->isolate()->InContext());
-        if (!value->IsObject())
-            return nullptr;
-
-        v8::Handle<v8::String> wrapperProperty = getHiddenProperty(scriptState->isolate());
-        return doFindWrapper(v8::Local<v8::Object>::Cast(value), wrapperProperty, scriptState);
-    }
-
-    template<typename WrapperType>
-    static PassRefPtr<V8EventListener> findOrCreateWrapper(v8::Local<v8::Value>, ScriptState*);
-
-    static void clearWrapper(v8::Handle<v8::Object> listenerObject, v8::Isolate* isolate)
-    {
-        v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isolate);
-        listenerObject->DeleteHiddenValue(wrapperProperty);
-    }
-
-    static PassRefPtr<EventListener> getEventListener(ScriptState*, v8::Local<v8::Value>, ListenerLookupType);
-
-private:
-    static V8EventListener* doFindWrapper(v8::Local<v8::Object> object, v8::Handle<v8::String> wrapperProperty, ScriptState* scriptState)
-    {
-        v8::HandleScope scope(scriptState->isolate());
-        ASSERT(scriptState->isolate()->InContext());
-        v8::Local<v8::Value> listener = object->GetHiddenValue(wrapperProperty);
-        if (listener.IsEmpty())
-            return 0;
-        return static_cast<V8EventListener*>(v8::External::Cast(*listener)->Value());
-    }
-
-    static inline v8::Handle<v8::String> getHiddenProperty(v8::Isolate* isolate)
-    {
-        return v8AtomicString(isolate, "listener");
-    }
-};
-
-template<typename WrapperType>
-PassRefPtr<V8EventListener> V8EventListenerList::findOrCreateWrapper(v8::Local<v8::Value> value, ScriptState* scriptState)
-{
-    v8::Isolate* isolate = scriptState->isolate();
-    ASSERT(isolate->InContext());
-    if (!value->IsObject())
-        return nullptr;
-
-    v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
-    v8::Handle<v8::String> wrapperProperty = getHiddenProperty(isolate);
-
-    V8EventListener* wrapper = doFindWrapper(object, wrapperProperty, scriptState);
-    if (wrapper)
-        return wrapper;
-
-    RefPtr<V8EventListener> wrapperPtr = WrapperType::create(object, scriptState);
-    if (wrapperPtr)
-        object->SetHiddenValue(wrapperProperty, v8::External::New(isolate, wrapperPtr.get()));
-
-    return wrapperPtr;
-}
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_BINDINGS_CORE_V8_V8EVENTLISTENERLIST_H_