Use UNLIKELY() macro in generated bindings for minimum argument count checks

Source/bindings/tests/results/V8TestEventTarget.cpp

 /*
     This file is part of the Blink open source project.
     This file has been auto-generated by CodeGeneratorV8.pm. DO NOT MODIFY!
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
@@ skipping 49 matching lines @@
 
 namespace WebCore {
 WrapperTypeInfo V8TestEventTarget::info = { V8TestEventTarget::GetTemplate, V8TestEventTarget::derefObject, 0, V8TestEventTarget::toEventTarget, 0, V8TestEventTarget::installPerContextPrototypeProperties, &V8EventTarget::info, WrapperTypeObjectPrototype };
 
 namespace TestEventTargetV8Internal {
 
 template <typename T> void V8_USE(T) { }
 
 static void itemMethod(const v8::FunctionCallbackInfo<v8::Value>& args)
 {
-    if (args.Length() < 1) {
+    if (UNLIKELY(args.Length() < 1)) {
         throwNotEnoughArgumentsError(args.GetIsolate());
         return;
     }
     TestEventTarget* imp = V8TestEventTarget::toNative(args.Holder());
     V8TRYCATCH_VOID(unsigned, index, toUInt32(args[0]));
     v8SetReturnValue(args, imp->item(index), args.Holder());
     return;
 }
 
 static void itemMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& args)
 {
     TRACE_EVENT_SET_SAMPLING_STATE("Blink", "DOMMethod");
     TestEventTargetV8Internal::itemMethod(args);
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "Execution");
 }
 
 static void namedItemMethod(const v8::FunctionCallbackInfo<v8::Value>& args)
 {
-    if (args.Length() < 1) {
+    if (UNLIKELY(args.Length() < 1)) {
         throwNotEnoughArgumentsError(args.GetIsolate());
         return;
     }
     TestEventTarget* imp = V8TestEventTarget::toNative(args.Holder());
     V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<>, name, args[0]);
     v8SetReturnValue(args, imp->namedItem(name), args.Holder());
     return;
 }
 
 static void namedItemMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& args)
@@ skipping 243 matching lines @@
     V8DOMWrapper::associateObjectWithWrapper<V8TestEventTarget>(impl, &info, wrapper, isolate, WrapperConfiguration::Independent);
     return wrapper;
 }
 
 void V8TestEventTarget::derefObject(void* object)
 {
     fromInternalPointer(object)->deref();
 }
 
 } // namespace WebCore