Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/V8PerContextData.h

-/*
- * Copyright (C) 2012 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_V8PERCONTEXTDATA_H_
-#define SKY_ENGINE_BINDINGS_CORE_V8_V8PERCONTEXTDATA_H_
-
-#include "gin/public/context_holder.h"
-#include "gin/public/gin_embedders.h"
-#include "sky/engine/bindings/core/v8/CustomElementBinding.h"
-#include "sky/engine/bindings/core/v8/ScopedPersistent.h"
-#include "sky/engine/bindings/core/v8/V8PersistentValueMap.h"
-#include "sky/engine/bindings/core/v8/WrapperTypeInfo.h"
-#include "sky/engine/wtf/HashMap.h"
-#include "sky/engine/wtf/PassOwnPtr.h"
-#include "sky/engine/wtf/Vector.h"
-#include "sky/engine/wtf/text/AtomicString.h"
-#include "sky/engine/wtf/text/AtomicStringHash.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class CustomElementDefinition;
-class V8PerContextData;
-
-enum V8ContextEmbedderDataField {
-    v8ContextDebugIdIndex = static_cast<int>(gin::kDebugIdIndex),
-    v8ContextPerContextDataIndex = static_cast<int>(gin::kPerContextDataStartIndex + gin::kEmbedderBlink),
-};
-
-class V8PerContextData {
-public:
-    static PassOwnPtr<V8PerContextData> create(v8::Handle<v8::Context>);
-
-    static V8PerContextData* from(v8::Handle<v8::Context>);
-
-    ~V8PerContextData();
-
-    v8::Handle<v8::Context> context() { return m_context.newLocal(m_isolate); }
-
-    // To create JS Wrapper objects, we create a cache of a 'boiler plate'
-    // object, and then simply Clone that object each time we need a new one.
-    // This is faster than going through the full object creation process.
-    v8::Local<v8::Object> createWrapperFromCache(const WrapperTypeInfo* type)
-    {
-        v8::Local<v8::Object> boilerplate = m_wrapperBoilerplates.Get(type);
-        return !boilerplate.IsEmpty() ? boilerplate->Clone() : createWrapperFromCacheSlowCase(type);
-    }
-
-    v8::Local<v8::Function> constructorForType(const WrapperTypeInfo* type)
-    {
-        v8::Local<v8::Function> function = m_constructorMap.Get(type);
-        return (!function.IsEmpty()) ? function : constructorForTypeSlowCase(type);
-    }
-
-    v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*);
-
-    void addCustomElementBinding(CustomElementDefinition*, PassOwnPtr<CustomElementBinding>);
-    void clearCustomElementBinding(CustomElementDefinition*);
-    CustomElementBinding* customElementBinding(CustomElementDefinition*);
-
-private:
-    V8PerContextData(v8::Handle<v8::Context>);
-
-    v8::Local<v8::Object> createWrapperFromCacheSlowCase(const WrapperTypeInfo*);
-    v8::Local<v8::Function> constructorForTypeSlowCase(const WrapperTypeInfo*);
-
-    v8::Isolate* m_isolate;
-
-    // For each possible type of wrapper, we keep a boilerplate object.
-    // The boilerplate is used to create additional wrappers of the same type.
-    typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Object, false> WrapperBoilerplateMap;
-    WrapperBoilerplateMap m_wrapperBoilerplates;
-
-    typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Function, false> ConstructorMap;
-    ConstructorMap m_constructorMap;
-
-    OwnPtr<gin::ContextHolder> m_contextHolder;
-
-    ScopedPersistent<v8::Context> m_context;
-    ScopedPersistent<v8::Value> m_errorPrototype;
-
-    typedef WTF::HashMap<CustomElementDefinition*, OwnPtr<CustomElementBinding> > CustomElementBindingMap;
-    OwnPtr<CustomElementBindingMap> m_customElementBindings;
-};
-
-class V8PerContextDebugData {
-public:
-    static bool setContextDebugData(v8::Handle<v8::Context>, const char* worldName, int debugId);
-    static int contextDebugId(v8::Handle<v8::Context>);
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_BINDINGS_CORE_V8_V8PERCONTEXTDATA_H_