Communicate whether passive event listeners exist to cc.

cc/layers/layer_impl.h

Index: cc/layers/layer_impl.h
diff --git a/cc/layers/layer_impl.h b/cc/layers/layer_impl.h
index 990a3848748d6970788038ee0d15f95b8d448c2f..41f6d0e5eccd07f920df39667e77ef48e44874e4 100644
--- a/cc/layers/layer_impl.h
+++ b/cc/layers/layer_impl.h
@@ -27,6 +27,7 @@
 #include "cc/debug/frame_timing_request.h"
 #include "cc/input/input_handler.h"
 #include "cc/layers/draw_properties.h"
+#include "cc/layers/event_listener_properties.h"
 #include "cc/layers/layer_lists.h"
 #include "cc/layers/layer_position_constraint.h"
 #include "cc/layers/performance_properties.h"
@@ -496,10 +497,19 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
     return should_scroll_on_main_thread_;
   }
 
-  void SetHaveWheelEventHandlers(bool have_wheel_event_handlers) {
-    have_wheel_event_handlers_ = have_wheel_event_handlers;
+  void SetWheelEventProperties(EventListenerProperties wheel_event_properties) {
+    wheel_event_properties_ = wheel_event_properties;
+  }
+  EventListenerProperties wheel_event_properties() const {
+    return wheel_event_properties_;
+  }
+
+  void SetTouchEventProperties(EventListenerProperties touch_event_properties) {
+    touch_event_properties_ = touch_event_properties;
+  }
+  EventListenerProperties touch_event_properties() const {
+    return touch_event_properties_;
   }
-  bool have_wheel_event_handlers() const { return have_wheel_event_handlers_; }
 
   void SetHaveScrollEventHandlers(bool have_scroll_event_handlers) {
     have_scroll_event_handlers_ = have_scroll_event_handlers;
@@ -772,7 +782,6 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
   gfx::Vector2dF offset_to_transform_parent_;
 
   bool should_scroll_on_main_thread_ : 1;
-  bool have_wheel_event_handlers_ : 1;
   bool have_scroll_event_handlers_ : 1;
 
   static_assert(SCROLL_BLOCKS_ON_MAX < (1 << 3), "ScrollBlocksOn too big");
@@ -808,6 +817,9 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
   // (all content was complete).
   bool was_ever_ready_since_last_transform_animation_ : 1;
 
+  EventListenerProperties touch_event_properties_;
+  EventListenerProperties wheel_event_properties_;
+
   Region non_fast_scrollable_region_;
   Region touch_event_handler_region_;
   SkColor background_color_;