Support deprecation + use counters for constructor attributes.

Source/bindings/tests/idls/TestObject.idl

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 40 matching lines @@
     attribute unsigned short           unsignedShortAttr;
     attribute long                     longAttr;
     attribute long long                longLongAttr;
     attribute unsigned long long       unsignedLongLongAttr;
     attribute DOMString                stringAttr;
     [TreatNullAs=NullString] attribute DOMString treatNullAsNullStringStringAttr;
     [TreatNullAs=NullString, TreatUndefinedAs=NullString] attribute DOMString treatNullAsNullStringTreatUndefinedAsNullStringStringAttr;
     attribute EventHandler             eventHandlerAttr;
     [MeasureAs=TestFeature] attribute TestObject testObjAttr;
     [ExposeJSAccessors] attribute DOMString attrWithJSGetterAndSetter;
+    [MeasureAs=TestFeature] attribute TestSubObjConstructor TestSubObjMeasured;
 
     // Name starting with an acronym
     attribute TestObject                  XMLObjAttr;
 
     // Reflected DOM attributes
     [Reflect] attribute DOMString reflectedStringAttr;
     [Reflect, TreatNullAs=NullString] attribute DOMString reflectedTreatNullAsNullStringStringAttr;
     [Reflect, TreatNullAs=NullString, TreatUndefinedAs=NullString] attribute DOMString reflectedTreatNullAsNullStringTreatUndefinedAsNullStringStringAttr;
     [Reflect] attribute long reflectedIntegralAttr;
     [Reflect] attribute unsigned long reflectedUnsignedIntegralAttr;
@@ skipping 220 matching lines @@
     [PerWorldBindings, ActivityLogging=GetterForIsolatedWorlds] attribute long activityLoggedInIsolatedWorldsAttrGetter;
 
     // DeprecateAs
     [DeprecateAs=StaticReadonlyAttribute] static readonly attribute long deprecatedStaticReadOnlyAttr;
     [DeprecateAs=StaticAttribute] static attribute long deprecatedStaticAttr;
     [DeprecateAs=ReadonlyAttribute] readonly attribute long deprecatedReadonlyAttr;
     [DeprecateAs=Attribute] attribute long deprecatedAttr;
 
     [DeprecateAs=Method] void deprecatedMethod();
     [DeprecateAs=StaticMethod] static void deprecatedStaticMethod();
+    [DeprecateAs=ConstructorAttribute] attribute TestSubObjConstructor deprecatedConstructor;
 
     [DeprecateAs=Constant] const unsigned short DEPRECATED_CONSTANT = 1;
 
     // PutForwards
     [PutForwards=href] readonly attribute TestNode location;
     [PutForwards=hrefThrows] readonly attribute TestNode locationWithException;
 };
 
 // The following comment should not generate any code
 // TestObject implements TestImplements;