[bindings] Introduce ScriptValue.to<T> to convert to native values.

Source/bindings/core/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. 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.
@@ skipping 18 matching lines @@
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
 #ifndef V8Binding_h
 #define V8Binding_h
 
 #include "bindings/core/v8/DOMDataStore.h"
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/NativeValueTraits.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/V8BindingMacros.h"
 #include "bindings/core/v8/V8PerIsolateData.h"
 #include "bindings/core/v8/V8StringResource.h"
 #include "bindings/core/v8/V8ThrowException.h"
 #include "bindings/core/v8/V8ValueCache.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "wtf/text/AtomicString.h"
@@ skipping 485 matching lines @@
 inline v8::Handle<v8::Value> v8DateOrNaN(double value, v8::Isolate* isolate)
 {
     ASSERT(isolate);
     return v8::Date::New(isolate, std::isfinite(value) ? value : std::numeric_limits<double>::quiet_NaN());
 }
 
 // FIXME: Remove the special casing for NodeFilter and XPathNSResolver.
 PassRefPtrWillBeRawPtr<NodeFilter> toNodeFilter(v8::Handle<v8::Value>, v8::Handle<v8::Object>, ScriptState*);
 PassRefPtrWillBeRawPtr<XPathNSResolver> toXPathNSResolver(v8::Isolate*, v8::Handle<v8::Value>);
 
-template<class T> struct NativeValueTraits;
-
 bool toV8Sequence(v8::Handle<v8::Value>, uint32_t& length, v8::Isolate*, ExceptionState&);
 
 // Converts a JavaScript value to an array as per the Web IDL specification:
 // http://www.w3.org/TR/2012/CR-WebIDL-20120419/#es-array
 template <class T, class V8T>
 Vector<RefPtr<T>> toRefPtrNativeArrayUnchecked(v8::Local<v8::Value> v8Value, uint32_t length, v8::Isolate* isolate, ExceptionState& exceptionState)
 {
     Vector<RefPtr<T>> result;
     result.reserveInitialCapacity(length);
     v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(v8Value);
@@ skipping 478 matching lines @@
 
 // Callback functions used by generated code.
 void v8ConstructorAttributeGetterAsProperty(v8::Local<v8::String> propertyName, const v8::PropertyCallbackInfo<v8::Value>&);
 void v8ConstructorAttributeGetterAsAccessor(const v8::FunctionCallbackInfo<v8::Value>&);
 
 typedef void (*InstallTemplateFunction)(v8::Local<v8::FunctionTemplate>, v8::Isolate*);
 
 } // namespace blink
 
 #endif // V8Binding_h