bindings: Throw TypeError when required dictionary member is undefined

Source/core/testing/DictionaryTest.cpp

 // 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 "config.h"
 #include "DictionaryTest.h"
 
 #include "core/testing/InternalDictionary.h"
 #include "core/testing/InternalDictionaryDerived.h"
 
 namespace blink {
 
 DictionaryTest::DictionaryTest()
+    : m_requiredBooleanMember(false)
 {
 }
 
 DictionaryTest::~DictionaryTest()
 {
 }
 
 void DictionaryTest::set(const InternalDictionary& testingDictionary)
 {
     reset();
@@ skipping 74 matching lines @@
         result.setElementOrNullMember(m_elementOrNullMember);
     result.setObjectMember(m_objectMember);
     result.setObjectOrNullMemberWithDefault(m_objectOrNullMemberWithDefault);
     if (!m_doubleOrStringMember.isNull())
         result.setDoubleOrStringMember(m_doubleOrStringMember);
     result.setEventTargetOrNullMember(m_eventTargetOrNullMember);
 }
 
 void DictionaryTest::setDerived(const InternalDictionaryDerived& derived)
 {
+    ASSERT(derived.hasRequiredBooleanMember());
     set(derived);
     if (derived.hasDerivedStringMember())
         m_derivedStringMember = derived.derivedStringMember();
     m_derivedStringMemberWithDefault = derived.derivedStringMemberWithDefault();
+    m_requiredBooleanMember = derived.requiredBooleanMember();
 }
 
 void DictionaryTest::getDerived(InternalDictionaryDerived& result)
 {
     get(result);
     result.setDerivedStringMember(m_derivedStringMember);
     result.setDerivedStringMemberWithDefault(m_derivedStringMemberWithDefault);
+    result.setRequiredBooleanMember(m_requiredBooleanMember);
 }
 
 void DictionaryTest::reset()
 {
     m_longMember = nullptr;
     m_longMemberWithClamp = nullptr;
     m_longMemberWithEnforceRange = nullptr;
     m_longMemberWithDefault = -1; // This value should not be returned.
     m_longOrNullMember = nullptr;
     m_longOrNullMemberWithDefault = nullptr;
     m_booleanMember = nullptr;
     m_doubleMember = nullptr;
     m_unrestrictedDoubleMember = nullptr;
     m_stringMember = String();
     m_stringMemberWithDefault = String("Should not be returned");
     m_stringSequenceMember = nullptr;
     m_stringSequenceOrNullMember = nullptr;
     m_enumMember = String();
     m_enumMemberWithDefault = String();
     m_enumOrNullMember = String();
     m_elementMember = nullptr;
     m_elementOrNullMember = nullptr;
     m_objectMember = ScriptValue();
     m_objectOrNullMemberWithDefault = ScriptValue();
     m_doubleOrStringMember = DoubleOrString();
     m_eventTargetOrNullMember = nullptr;
     m_derivedStringMember = String();
     m_derivedStringMemberWithDefault = String();
+    m_requiredBooleanMember = false;
 }
 
 DEFINE_TRACE(DictionaryTest)
 {
     visitor->trace(m_elementMember);
     visitor->trace(m_elementOrNullMember);
     visitor->trace(m_eventTargetOrNullMember);
 }
 
 }