Move have_wheel_event_handlers to WebLayerTreeView.

cc/blink/web_layer_impl.cc

Index: cc/blink/web_layer_impl.cc
diff --git a/cc/blink/web_layer_impl.cc b/cc/blink/web_layer_impl.cc
index 41efb47beee678b61941f7efe7d8f679c7e6ab25..4116afceb53fe769ab448bdb9599db5a9eaf0336 100644
--- a/cc/blink/web_layer_impl.cc
+++ b/cc/blink/web_layer_impl.cc
@@ -327,12 +327,10 @@ bool WebLayerImpl::userScrollableVertical() const {
   return layer_->user_scrollable_vertical();
 }
 
-void WebLayerImpl::setHaveWheelEventHandlers(bool have_wheel_event_handlers) {
-  layer_->SetHaveWheelEventHandlers(have_wheel_event_handlers);
-}
-
 bool WebLayerImpl::haveWheelEventHandlers() const {

[aelias_OOO_until_Jul13, 2016/01/27 23:55:46]

Looks like this is only used by InspectorLayerTreeAgent.  It should probably
check if the layer is the root layer to avoid spammy duplication in the profiler
view.

[dtapuska, 2016/01/28 16:23:06]

I've removed this method for clarity.

-  return layer_->have_wheel_event_handlers();
+  if (const cc::LayerTreeHost* layer_tree_host = layer_->layer_tree_host())
+    return layer_tree_host->have_wheel_event_handlers();
+  return false;
 }
 
 void WebLayerImpl::setHaveScrollEventHandlers(bool have_scroll_event_handlers) {