Move have_wheel_event_handlers to WebLayerTreeView.

content/test/web_layer_tree_view_impl_for_testing.h

Index: content/test/web_layer_tree_view_impl_for_testing.h
diff --git a/content/test/web_layer_tree_view_impl_for_testing.h b/content/test/web_layer_tree_view_impl_for_testing.h
index 4596be861bfc9dc8052a12c1edde86f6636d0cae..990ef07c1692ac643b6f617a197b4a328bbd01ca 100644
--- a/content/test/web_layer_tree_view_impl_for_testing.h
+++ b/content/test/web_layer_tree_view_impl_for_testing.h
@@ -68,6 +68,9 @@ class WebLayerTreeViewImplForTesting
   void registerSelection(const blink::WebSelection& selection) override;
   void clearSelection() override;
 

[Charlie Reis, 2016/01/28 23:44:00]

nit: No blank line here, since it's still part of the WebLayerTreeView block of
overrides.

+  void setHaveWheelEventHandlers(bool have_event_handlers) override;
+  bool haveWheelEventHandlers() const override;
+
   // cc::LayerTreeHostClient implementation.
   void WillBeginMainFrame() override {}
   void DidBeginMainFrame() override {}