[V8] Remove redundant usage of MAYBE_MISSING_PARAMETER() macro
https://bugs.webkit.org/show_bug.cgi?id=109899

Reviewed by Adam Barth.

Currently:

- MAYBE_MISSING_PARAMETER(args, index, DefaultIsUndefined) returns args[index].
- MAYBE_MISSING_PARAMETER(args, index, DefaultIsNullString) returns Local<Value>()
if args[index] is missing (i.e. the length of |args| is less than |index|).
It returns args[index] otherwise.

No one other than CodeGeneratorV8.pm uses
MAYBE_MISSING_PARAMETER(args, index, DefaultIsUndefined). Instead, we simply use
args[index]. We should remove the redundant usage from CodeGeneratorV8.pm too.
The long-name macro has been making generated code less readable.

In addition, we can rename MAYBE_MISSING_PARAMETER() to argumentOrNull().

No tests. No change in behavior.

* bindings/scripts/CodeGeneratorV8.pm:
(GenerateParametersCheck):
* bindings/scripts/test/V8/V8Float64Array.cpp:
(WebCore::Float64ArrayV8Internal::fooCallback):
* bindings/scripts/test/V8/V8TestActiveDOMObject.cpp:
(WebCore::TestActiveDOMObjectV8Internal::excitingFunctionCallback):
(WebCore::TestActiveDOMObjectV8Internal::postMessageCallback):
* bindings/scripts/test/V8/V8TestCustomNamedGetter.cpp:
(WebCore::TestCustomNamedGetterV8Internal::anotherFunctionCallback):
* bindings/scripts/test/V8/V8TestEventTarget.cpp:
(WebCore::TestEventTargetV8Internal::itemCallback):
(WebCore::TestEventTargetV8Internal::dispatchEventCallback):
* bindings/scripts/test/V8/V8TestInterface.cpp:
(WebCore::TestInterfaceV8Internal::supplementalMethod2Callback):
(WebCore::V8TestInterface::constructorCallback):
* bindings/scripts/test/V8/V8TestMediaQueryListListener.cpp:
(WebCore::TestMediaQueryListListenerV8Internal::methodCallback):
* bindings/scripts/test/V8/V8TestNamedConstructor.cpp:
(WebCore::V8TestNamedConstructorConstructorCallback):
* bindings/scripts/test/V8/V8TestObj.cpp:
(WebCore::TestObjV8Internal::voidMethodWithArgsCallback):
(WebCore::TestObjV8Internal::longMethodWithArgsCallback):
(WebCore::TestObjV8Internal::objMethodWithArgsCallback):
(WebCore::TestObjV8Internal::methodWithSequenceArgCallback):
(WebCore::TestObjV8Internal::methodReturningSequenceCallback):
(WebCore::TestObjV8Internal::methodThatRequiresAllArgsAndThrowsCallback):
(WebCore::TestObjV8Internal::optionsObjectCallback):
(WebCore::TestObjV8Internal::methodWithOptionalArgCallback):
(WebCore::TestObjV8Internal::methodWithNonOptionalArgAndOptionalArgCallback):
(WebCore::TestObjV8Internal::methodWithNonOptionalArgAndTwoOptionalArgsCallback):
(WebCore::TestObjV8Internal::methodWithOptionalStringCallback):
(WebCore::TestObjV8Internal::methodWithOptionalStringIsUndefinedCallback):
(WebCore::TestObjV8Internal::methodWithOptionalStringIsNullStringCallback):
(WebCore::TestObjV8Internal::methodWithNonCallbackArgAndCallbackArgCallback):
(WebCore::TestObjV8Internal::overloadedMethod1Callback):
(WebCore::TestObjV8Internal::overloadedMethod2Callback):
(WebCore::TestObjV8Internal::overloadedMethod3Callback):
(WebCore::TestObjV8Internal::overloadedMethod4Callback):
(WebCore::TestObjV8Internal::overloadedMethod6Callback):
(WebCore::TestObjV8Internal::overloadedMethod7Callback):
(WebCore::TestObjV8Internal::overloadedMethod8Callback):
(WebCore::TestObjV8Internal::overloadedMethod9Callback):
(WebCore::TestObjV8Internal::overloadedMethod10Callback):
(WebCore::TestObjV8Internal::overloadedMethod11Callback):
(WebCore::TestObjV8Internal::classMethodWithOptionalCallback):
(WebCore::TestObjV8Internal::overloadedMethod12Callback):
(WebCore::TestObjV8Internal::enabledAtRuntimeMethod1Callback):
(WebCore::TestObjV8Internal::enabledAtRuntimeMethod2Callback):
(WebCore::TestObjV8Internal::enabledPerContextMethod1Callback):
(WebCore::TestObjV8Internal::enabledPerContextMethod2Callback):
(WebCore::TestObjV8Internal::stringArrayFunctionCallback):
(WebCore::TestObjV8Internal::domStringListFunctionCallback):
(WebCore::TestObjV8Internal::convert1Callback):
(WebCore::TestObjV8Internal::convert2Callback):
(WebCore::TestObjV8Internal::convert4Callback):
(WebCore::TestObjV8Internal::convert5Callback):
(WebCore::TestObjV8Internal::strictFunctionCallback):
(WebCore::TestObjV8Internal::variadicStringMethodCallback):
(WebCore::TestObjV8Internal::variadicDoubleMethodCallback):
(WebCore::TestObjV8Internal::variadicNodeMethodCallback):
* bindings/scripts/test/V8/V8TestOverloadedConstructors.cpp:
(WebCore::V8TestOverloadedConstructors::constructor1Callback):
(WebCore::V8TestOverloadedConstructors::constructor2Callback):
(WebCore::V8TestOverloadedConstructors::constructor3Callback):
(WebCore::V8TestOverloadedConstructors::constructor4Callback):
* bindings/scripts/test/V8/V8TestSerializedScriptValueInterface.cpp:
(WebCore::V8TestSerializedScriptValueInterface::constructorCallback):
* bindings/scripts/test/V8/V8TestTypedefs.cpp:
(WebCore::TestTypedefsV8Internal::funcCallback):
(WebCore::TestTypedefsV8Internal::setShadowCallback):
(WebCore::TestTypedefsV8Internal::methodWithSequenceArgCallback):
(WebCore::TestTypedefsV8Internal::nullableArrayArgCallback):
(WebCore::TestTypedefsV8Internal::stringArrayFunctionCallback):
(WebCore::TestTypedefsV8Internal::stringArrayFunction2Callback):
(WebCore::V8TestTypedefs::constructorCallback):
* bindings/v8/V8BindingMacros.h:
(WebCore):
* bindings/v8/custom/V8HistoryCustom.cpp:
(WebCore::V8History::pushStateCallbackCustom):
(WebCore::V8History::replaceStateCallbackCustom):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@143305 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Unreviewed build fix after r143304.

* bindings/js/JSDOMBinding.h:
(WebCore::argumentOrNull):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@143306 268f45cc-cd09-0410-ab3c-d52691b4dbfc