Fix JsObject#getProperties method so that it returns collection of JsObjectProperty

plugins/org.chromium.sdk/src/org/chromium/sdk/JsObject.java

 // Copyright (c) 2009 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.
 
 package org.chromium.sdk;
 
 import java.util.Collection;
 
 import org.chromium.sdk.util.MethodIsBlockingException;
 
 /**
  * A compound JsValue that has zero or more properties. Note that JavaScript {@code null}
  * value while officially being 'object' in the SDK is represented as a plain {@link JsValue}.
  */
 public interface JsObject extends JsValue {
 
   /**
    * @return the class name of this object
    */
   String getClassName();
 
   /**
    * @return the own properties of this compound value (does <strong>not</strong> include
    *     properties from proto object)
    * @throws MethodIsBlockingException because it may need to load value from remote
-   * TODO: make it return list of JsObjectProperty once hacks for supporting exceptions are
-   *       removed.
    */
-  Collection<? extends JsVariable> getProperties() throws MethodIsBlockingException;
+  Collection<? extends JsObjectProperty> getProperties() throws MethodIsBlockingException;
 
   /**
    * @return the internal properties of this compound value (e.g. those properties which
    *         are not detectable with the "in" operator: __proto__ etc)
    * @throws MethodIsBlockingException because it may need to load value from remote
    */
   Collection<? extends JsVariable> getInternalProperties() throws MethodIsBlockingException;
 
   /**
    * @param name of the property to get
@@ skipping 24 matching lines @@
    * @see #getRemoteValueMapping()
    */
   String getRefId();
 
   /**
    * @return value mapping this object is associated with or null for special-case
    *     immutable objects
    */
   RemoteValueMapping getRemoteValueMapping();
 }