Communicate whether passive event listeners exist to cc.

cc/trees/layer_tree_impl.cc

 // Copyright 2011 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.
 
 #include "cc/trees/layer_tree_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1681 matching lines @@
       property_trees_.transform_tree, property_trees_.clip_tree,
       use_property_trees, &data_for_recursion);
   return data_for_recursion.closest_match;
 }
 
 struct HitTestVisibleScrollableOrTouchableFunctor {
   bool operator()(LayerImpl* layer) const {
     return layer->IsDrawnRenderSurfaceLayerListMember() ||
            ScrollsAnyDrawnRenderSurfaceLayerListMember(layer) ||
            !layer->touch_event_handler_region().IsEmpty() ||
-           layer->have_wheel_event_handlers();
+           layer->wheel_event_properties() != EventListenerProperties::NONE;
   }
 };
 
 LayerImpl* LayerTreeImpl::FindLayerThatIsHitByPoint(
     const gfx::PointF& screen_space_point) {
   if (!root_layer())
     return NULL;
   bool update_lcd_text = false;
   if (!UpdateDrawProperties(update_lcd_text))
     return NULL;
@@ skipping 27 matching lines @@
   if (PointIsClippedBySurfaceOrClipRect(screen_space_point, layer_impl,
                                         transform_tree, clip_tree,
                                         use_property_trees))
     return false;
 
   return true;
 }
 
 struct FindWheelEventLayerFunctor {
   bool operator()(LayerImpl* layer) const {
-    return layer->have_wheel_event_handlers();
+    return layer->wheel_event_properties() != EventListenerProperties::NONE;
   }
 };
 
 LayerImpl* LayerTreeImpl::FindLayerWithWheelHandlerThatIsHitByPoint(
     const gfx::PointF& screen_space_point) {
   if (!root_layer())
     return NULL;
   bool update_lcd_text = false;
   if (!UpdateDrawProperties(update_lcd_text))
     return NULL;
@@ skipping 312 matching lines @@
                                                    const gfx::BoxF& box,
                                                    gfx::BoxF* bounds) const {
   *bounds = gfx::BoxF();
   return layer_tree_host_impl_->animation_host()
              ? layer_tree_host_impl_->animation_host()
                    ->TransformAnimationBoundsForBox(layer->id(), box, bounds)
              : true;
 }
 
 }  // namespace cc