Do not skip subtrees with wheel or touch handlers

cc/layers/draw_properties.h

Index: cc/layers/draw_properties.h
diff --git a/cc/layers/draw_properties.h b/cc/layers/draw_properties.h
index 3f167b9b0b653c219f001f4072d149e700e0accc..9a78d29a5c0a22bf164dae12a94b9b53ec39f259 100644
--- a/cc/layers/draw_properties.h
+++ b/cc/layers/draw_properties.h
@@ -29,6 +29,7 @@ struct CC_EXPORT DrawProperties {
         num_descendants_that_draw_content(0),
         num_unclipped_descendants(0),
         layer_or_descendant_has_copy_request(false),
+        layer_or_descendant_has_handler(false),

[danakj, 2014/06/12 18:24:41]

nit: has_input_handler?

         has_child_with_a_scroll_parent(false),
         sorted_for_recursion(false),
         index_of_first_descendants_addition(0),
@@ -102,6 +103,9 @@ struct CC_EXPORT DrawProperties {
   // present on it.
   bool layer_or_descendant_has_copy_request;
 
+  // If true, the layer or one of its descendants has a wheel or touch handler.
+  bool layer_or_descendant_has_handler;
+
   // This is true if the layer has any direct child that has a scroll parent.
   // This layer will not be the scroll parent in this case. This information
   // lets us avoid work in CalculateDrawPropertiesInternal -- if none of our