Communicate whether passive event listeners exist to cc.

third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.cpp
index c29f82eb7b25af03fbf2c1864ab1c3011038bc7e..602466e56e8e535bbdbb2ea983566a9382287ba1 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorLayerTreeAgent.cpp
@@ -212,9 +212,9 @@ PassRefPtr<TypeBuilder::Array<TypeBuilder::LayerTree::Layer> > InspectorLayerTre
     RefPtr<TypeBuilder::Array<TypeBuilder::LayerTree::Layer> > layers = TypeBuilder::Array<TypeBuilder::LayerTree::Layer>::create();
     buildLayerIdToNodeIdMap(compositor->rootLayer(), layerIdToNodeIdMap);
     int scrollingLayerId = m_inspectedFrames->root()->view()->layerForScrolling()->platformLayer()->id();
-    bool haveWheelEventHandlers = m_inspectedFrames->root()->chromeClient().haveWheelEventHandlers();
+    bool haveBlockingWheelEventHandlers = m_inspectedFrames->root()->chromeClient().eventListenerProperties(WebEventListenerClass::MouseWheel) == WebEventListenerProperties::Blocking;
 
-    gatherGraphicsLayers(rootGraphicsLayer(), layerIdToNodeIdMap, layers, haveWheelEventHandlers, scrollingLayerId);
+    gatherGraphicsLayers(rootGraphicsLayer(), layerIdToNodeIdMap, layers, haveBlockingWheelEventHandlers, scrollingLayerId);
     return layers.release();
 }