Remove unused V8 integration code in Sky

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

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef SKY_ENGINE_BINDINGS_CORE_V8_SCRIPTPROMISEPROPERTYBASE_H_
-#define SKY_ENGINE_BINDINGS_CORE_V8_SCRIPTPROMISEPROPERTYBASE_H_
-
-#include "sky/engine/bindings/core/v8/ScopedPersistent.h"
-#include "sky/engine/bindings/core/v8/ScriptPromise.h"
-#include "sky/engine/bindings/core/v8/ScriptPromiseProperties.h"
-#include "sky/engine/core/dom/ContextLifecycleObserver.h"
-#include "sky/engine/wtf/OwnPtr.h"
-#include "sky/engine/wtf/RefCounted.h"
-#include "sky/engine/wtf/Vector.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class DOMWrapperWorld;
-class ExecutionContext;
-class ScriptState;
-
-class ScriptPromisePropertyBase : public ContextLifecycleObserver {
-public:
-    virtual ~ScriptPromisePropertyBase();
-
-    enum Name {
-#define P(Name) Name,
-        SCRIPT_PROMISE_PROPERTIES(P)
-#undef P
-    };
-
-    enum State {
-        Pending,
-        Resolved,
-        Rejected,
-    };
-    State state() const { return m_state; }
-
-    ScriptPromise promise(DOMWrapperWorld&);
-
-protected:
-    ScriptPromisePropertyBase(ExecutionContext*, Name);
-
-    void resolveOrReject(State targetState);
-
-    // ScriptPromiseProperty overrides these to wrap the holder,
-    // rejected value and resolved value. The
-    // ScriptPromisePropertyBase caller will enter the V8Context for
-    // the property's execution context and the world it is
-    // creating/settling promises in; the implementation should use
-    // this context.
-    virtual v8::Handle<v8::Object> holder(v8::Handle<v8::Object> creationContext, v8::Isolate*) = 0;
-    virtual v8::Handle<v8::Value> resolvedValue(v8::Handle<v8::Object> creationContext, v8::Isolate*) = 0;
-    virtual v8::Handle<v8::Value> rejectedValue(v8::Handle<v8::Object> creationContext, v8::Isolate*) = 0;
-
-    void resetBase();
-
-private:
-    typedef Vector<OwnPtr<ScopedPersistent<v8::Object> > > WeakPersistentSet;
-
-    void resolveOrRejectInternal(v8::Handle<v8::Promise::Resolver>);
-    v8::Local<v8::Object> ensureHolderWrapper(ScriptState*);
-    void clearWrappers();
-
-    v8::Handle<v8::String> promiseName();
-    v8::Handle<v8::String> resolverName();
-
-    v8::Isolate* m_isolate;
-    Name m_name;
-    State m_state;
-
-    WeakPersistentSet m_wrappers;
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_BINDINGS_CORE_V8_SCRIPTPROMISEPROPERTYBASE_H_