IDL: Avoid generating empty ConstantConfiguration arrays

Source/bindings/tests/results/V8TestInterface2.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.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #include "V8TestInterface2.h"
 
 #include "bindings/core/v8/ExceptionState.h"
@@ skipping 467 matching lines @@
     v8::Local<v8::Signature> defaultSignature;
     defaultSignature = V8DOMConfiguration::installDOMClassTemplate(functionTemplate, "TestInterface2", v8::Local<v8::FunctionTemplate>(), V8TestInterface2::internalFieldCount,
         0, 0,
         0, 0,
         V8TestInterface2Methods, WTF_ARRAY_LENGTH(V8TestInterface2Methods),
         isolate);
     functionTemplate->SetCallHandler(V8TestInterface2::constructorCallback);
     functionTemplate->SetLength(0);
     v8::Local<v8::ObjectTemplate> instanceTemplate ALLOW_UNUSED = functionTemplate->InstanceTemplate();
     v8::Local<v8::ObjectTemplate> prototypeTemplate ALLOW_UNUSED = functionTemplate->PrototypeTemplate();
+    if (RuntimeEnabledFeatures::featureNameEnabled()) {
+        static const V8DOMConfiguration::ConstantConfiguration constantConfiguration = {"CONST_VALUE_1", 1, 0, 0, V8DOMConfiguration::ConstantTypeUnsignedShort};
+        V8DOMConfiguration::installConstants(functionTemplate, prototypeTemplate, &constantConfiguration, 1, isolate);
+    }
+    COMPILE_ASSERT(1 == TestInterface2::CONST_VALUE_1, TheValueOfTestInterface2_CONST_VALUE_1DoesntMatchWithImplementation);
     functionTemplate->InstanceTemplate()->SetIndexedPropertyHandler(TestInterface2V8Internal::indexedPropertyGetterCallback, TestInterface2V8Internal::indexedPropertySetterCallback, 0, TestInterface2V8Internal::indexedPropertyDeleterCallback, indexedPropertyEnumerator<TestInterface2>);
     functionTemplate->InstanceTemplate()->SetNamedPropertyHandler(TestInterface2V8Internal::namedPropertyGetterCallback, TestInterface2V8Internal::namedPropertySetterCallback, TestInterface2V8Internal::namedPropertyQueryCallback, TestInterface2V8Internal::namedPropertyDeleterCallback, TestInterface2V8Internal::namedPropertyEnumeratorCallback);
 
     // Custom toString template
     functionTemplate->Set(v8AtomicString(isolate, "toString"), V8PerIsolateData::from(isolate)->toStringTemplate());
 }
 
 v8::Handle<v8::FunctionTemplate> V8TestInterface2::domTemplate(v8::Isolate* isolate)
 {
     return V8DOMConfiguration::domClassTemplate(isolate, const_cast<WrapperTypeInfo*>(&wrapperTypeInfo), installV8TestInterface2Template);
@@ skipping 56 matching lines @@
     fromInternalPointer(internalPointer)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterface2* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink