Re-delete V8Binding and use the upstreamed version

webkit/port/bindings/v8/v8_binding.h

-// Copyright (c) 2006-2008 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 V8_BINDING_H__
-#define V8_BINDING_H__
-
-#include "config.h"
-
-#include "MathExtras.h"
-#include "PlatformString.h"
-
-#include <v8.h>
-
-namespace WebCore {
-
-// The string returned by this function is still owned by the argument
-// and will be deallocated when the argument is deallocated.
-inline const uint16_t* FromWebCoreString(const String& str) {
-  return reinterpret_cast<const uint16_t*>(str.characters());
-}
-
-// Convert v8 types to a WebCore::String. If the V8 string is not already
-// an external string then it is transformed into an external string at this
-// point to avoid repeated conversions.
-String v8StringToWebCoreString(
-    v8::Handle<v8::String> obj, bool externalize);
-String v8ValueToWebCoreString(v8::Handle<v8::Value> obj);
-
-// TODO(mbelshe): drop this in favor of the type specific
-//    v8ValueToWebCoreString when we rework the code generation.
-inline String ToWebCoreString(v8::Handle<v8::Value> obj) {
-  return v8ValueToWebCoreString(obj);
-}
-
-inline String ToWebCoreString(v8::Handle<v8::String> string) {
-  return v8StringToWebCoreString(string, true);
-}
-
-// Convert v8 types to a WebCore::AtomicString.
-AtomicString v8StringToAtomicWebCoreString(v8::Handle<v8::String> obj);
-AtomicString v8ValueToAtomicWebCoreString(v8::Handle<v8::Value> obj);
-
-inline String valueToStringWithNullCheck(v8::Handle<v8::Value> value) {
-  if (value->IsNull()) return String();
-  return ToWebCoreString(value);
-}
-
-inline String valueToStringWithNullOrUndefinedCheck(
-    v8::Handle<v8::Value> value) {
-  if (value->IsNull() || value->IsUndefined()) return String();
-  return ToWebCoreString(value);
-}
-
-// Convert a value to a 32-bit integer.  The conversion fails if the
-// value cannot be converted to an integer or converts to nan or to an
-// infinity.
-// FIXME: Rename to toInt32() once V8 bindings migration is complete.
-inline int ToInt32(v8::Handle<v8::Value> value, bool& ok) {
-  ok = true;
-
-  // Fast case.  The value is already a 32-bit integer.
-  if (value->IsInt32()) {
-    return value->Int32Value();
-  }
-
-  // Can the value be converted to a number?
-  v8::Local<v8::Number> number_object = value->ToNumber();
-  if (number_object.IsEmpty()) {
-    ok = false;
-    return 0;
-  }
-
-  // Does the value convert to nan or to an infinity?
-  double number_value = number_object->Value();
-  if (isnan(number_value) || isinf(number_value)) {
-    ok = false;
-    return 0;
-  }
-
-  // Can the value be converted to a 32-bit integer?
-  v8::Local<v8::Int32> int_value = value->ToInt32();
-  if (int_value.IsEmpty()) {
-    ok = false;
-    return 0;
-  }
-
-  // Return the result of the int32 conversion.
-  return int_value->Value();
-}
-
-// Convert a value to a 32-bit integer assuming the conversion cannot fail.
-// FIXME: Rename to toInt32() once V8 bindings migration is complete.
-inline int ToInt32(v8::Handle<v8::Value> value) {
-  bool ok;
-  return ToInt32(value, ok);
-}
-
-inline String ToString(const String& string) {
-  return string;
-}
-
-// Convert a string to a V8 string.
-v8::Handle<v8::String> v8String(const String& str);
-
-inline v8::Handle<v8::String> v8UndetectableString(const String& str) {
-  return v8::String::NewUndetectable(FromWebCoreString(str), str.length());
-}
-
-// Return a V8 external string that shares the underlying buffer with the given
-// WebCore string. The reference counting mechanism is used to keep the
-// underlying buffer alive while the string is still live in the V8 engine.
-v8::Local<v8::String> v8ExternalString(const String& str);
-
-inline v8::Handle<v8::Value> v8StringOrNull(const String& str) {
-  return str.isNull()
-    ? v8::Handle<v8::Value>(v8::Null())
-    : v8::Handle<v8::Value>(v8String(str));
-}
-
-inline v8::Handle<v8::Value> v8StringOrUndefined(const String& str) {
-  return str.isNull()
-    ? v8::Handle<v8::Value>(v8::Undefined())
-    : v8::Handle<v8::Value>(v8String(str));
-}
-
-inline v8::Handle<v8::Value> v8StringOrFalse(const String& str) {
-  return str.isNull()
-    ? v8::Handle<v8::Value>(v8::False())
-    : v8::Handle<v8::Value>(v8String(str));
-}
-
-}  // namespace WebCore
-
-#endif  // V8_BINDING_H__