Import Dart bindings as of Blink r188698. This merely copies the files over and does not attach any…

sky/engine/bindings-dart/common/ScriptState.h

Index: sky/engine/bindings-dart/common/ScriptState.h
diff --git a/sky/engine/bindings-dart/common/ScriptState.h b/sky/engine/bindings-dart/common/ScriptState.h
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+++ b/sky/engine/bindings-dart/common/ScriptState.h
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+/*
+ * Copyright (C) 2014 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 ScriptState_h
+#define ScriptState_h
+
+#include "bindings/common/AbstractScriptValue.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Assertions.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/RefCounted.h"
+
+namespace blink {
+
+class AbstractScriptPromiseResolver;
+class AbstractScriptStateProtectingContext;
+class DOMException;
+class DOMWrapperWorld;
+class ExecutionContext;
+class IDBAny;
+class IDBKey;
+class LocalDOMWindow;
+class LocalFrame;
+class SharedBuffer;
+class ScriptPromiseResolver;
+class V8ScriptState;
+class WebBlobInfo;
+
+class ScriptState : public RefCounted<ScriptState> {
+    WTF_MAKE_NONCOPYABLE(ScriptState);
+public:
+    virtual ~ScriptState() { }
+
+    virtual bool isV8ScriptState() const { return false; }
+    virtual bool isDartScriptState() const { return false; }
+    virtual V8ScriptState* v8ScriptState() = 0;
+
+    virtual ExecutionContext* executionContext() const = 0;
+    virtual LocalDOMWindow* domWindow() const = 0;
+    virtual LocalDOMWindow* callingDOMWindow() const = 0;
+
+    virtual PassRefPtr<AbstractScriptValue> createNull() = 0;
+    virtual PassRefPtr<AbstractScriptValue> createUndefined() = 0;
+    virtual PassRefPtr<AbstractScriptValue> createBoolean(bool value) = 0;
+    virtual PassRefPtr<AbstractScriptPromise> createEmptyPromise() = 0;
+    virtual PassRefPtr<AbstractScriptPromise> createRejectedPromise(PassRefPtrWillBeRawPtr<DOMException>) = 0;
+    virtual PassRefPtr<AbstractScriptPromise> createPromiseRejectedWithTypeError(const String& message) = 0;
+
+    virtual PassOwnPtr<AbstractScriptPromiseResolver> createPromiseResolver(ScriptPromiseResolver*) = 0;
+    virtual AbstractScriptStateProtectingContext* createProtectingContext() = 0;
+    virtual PassRefPtr<AbstractScriptValue> idbAnyToScriptValue(IDBAny*) = 0;
+    virtual PassRefPtr<AbstractScriptValue> idbKeyToScriptValue(IDBKey*) = 0;
+
+    virtual const String* name() = 0;
+    virtual intptr_t libraryId() = 0;
+    virtual bool isJavaScript() = 0;
+
+#ifndef NDEBUG
+    virtual void assertPrimaryKeyValidOrInjectable(PassRefPtr<SharedBuffer>, const Vector<blink::WebBlobInfo>*, IDBKey*, const IDBKeyPath&) = 0;
+#endif
+
+protected:
+    ScriptState() { }
+};
+
+class AbstractScriptStateProtectingContext {
+public:
+    virtual ~AbstractScriptStateProtectingContext() { }
+    virtual ScriptState* get() const = 0;
+    virtual void clear() = 0;
+protected:
+    AbstractScriptStateProtectingContext() { }
+};
+
+// ScriptStateProtectingContext keeps the context (V8) or isolate (Dart) associated with the ScriptState alive.
+// You need to call clear() once you no longer need the context. Otherwise, the context will leak.
+class ScriptStateProtectingContext {
+    WTF_MAKE_NONCOPYABLE(ScriptStateProtectingContext);
+public:
+    ScriptStateProtectingContext(ScriptState* scriptState)
+        : m_implProtectingContext(scriptState ? scriptState->createProtectingContext() : 0) { }
+
+    ~ScriptStateProtectingContext()
+    {
+        clear();
+    }
+
+    ScriptState* operator->() const
+    {
+        return m_implProtectingContext ? m_implProtectingContext->get() : 0;
+    }
+    ScriptState* get() const
+    {
+        return m_implProtectingContext ? m_implProtectingContext->get() : 0;
+    }
+    void clear()
+    {
+        if (m_implProtectingContext) {
+            m_implProtectingContext->clear();
+            delete m_implProtectingContext;
+            m_implProtectingContext = 0;
+        }
+    }
+private:
+    AbstractScriptStateProtectingContext* m_implProtectingContext;
+};
+
+} // namespace blink
+
+#endif // ScriptState_h