[506331] Centralize ContentBehavior to be bound to root part alone.

- Ensured that ContentBehavior is only bound to root part and not to all
content parts.
- Changed synchronization to be based on four passes.

org.eclipse.gef.mvc.fx/src/org/eclipse/gef/mvc/fx/MvcFxModule.java

@@ -125,9 +125,6 @@ protected void bindAbstractContentPartAdapters(
 		// register default providers
 		bindTransformProviderAsAbstractContentPartAdapter(adapterMapBinder);
 
-		// register default behaviors
-		bindContentBehaviorAsAbstractContentPartAdapter(adapterMapBinder);
-
 		// register default policies
 		bindContentPolicyAsAbstractContentPartAdapter(adapterMapBinder);
 	}
@@ -230,24 +227,6 @@ protected void bindClickDragToolAsDomainAdapter(
 				.to(ClickDragTool.class);
 	}
 
-	/**
-	 * Adds a binding for {@link ContentBehavior}, parameterized by {@link Node}
-	 * , to the {@link AdapterMap} binder for {@link AbstractContentPart}.
-	 *
-	 * @param adapterMapBinder
-	 *            The {@link MapBinder} to be used for the binding registration.
-	 *            In this case, will be obtained from
-	 *            {@link AdapterMaps#getAdapterMapBinder(Binder, Class)} using
-	 *            {@link AbstractContentPart} as a key.
-	 *
-	 * @see AdapterMaps#getAdapterMapBinder(Binder, Class)
-	 */
-	protected void bindContentBehaviorAsAbstractContentPartAdapter(
-			MapBinder<AdapterKey<?>, Object> adapterMapBinder) {
-		adapterMapBinder.addBinding(AdapterKey.defaultRole())
-				.to(ContentBehavior.class);
-	}
-
 	/**
 	 * Adds a binding for {@link ContentBehavior}, parameterized by {@link Node}
 	 * , to the {@link AdapterMap} binder for {@link IRootPart}.