Add the c++ code part of bindings2/

sky/engine/bindings2/exception_state.cc

+// 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.
+
+#include "sky/engine/config.h"
+#include "sky/engine/bindings2/exception_state.h"
+
+namespace blink {
+
+ExceptionState::ExceptionState() : code_(0), had_exception_(false) {
+}
+
+ExceptionState::ExceptionState(Context context,
+                               const char* propertyName,
+                               const char* interfaceName) {
+}
+
+ExceptionState::ExceptionState(Context context, const char* interfaceName) {
+}
+
+ExceptionState::~ExceptionState() {
+}
+
+void ExceptionState::ThrowDOMException(const ExceptionCode&,
+                                       const String& message) {
+}
+
+void ExceptionState::ThrowTypeError(const String& message) {
+}
+
+void ExceptionState::ThrowRangeError(const String& message) {
+}
+
+bool ExceptionState::ThrowIfNeeded() {
+  return had_exception_;
+}
+
+void ExceptionState::ClearException() {
+}
+
+Dart_Handle ExceptionState::GetDartException(Dart_NativeArguments args,
+                                             bool auto_scope) {
+  // TODO(abarth): Still don't understand autoscope.
+  DCHECK(auto_scope);
+  return exception_.Release();
+}
+
+}  // namespace blink