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 12ee4c0b7e76227d49a67e3120bf9cf1e5fb314b..78c39955b5804f4ab27e8cde32969502e58dccab 100644
--- a/cc/layers/layer_impl.h
+++ b/cc/layers/layer_impl.h
@@ -500,10 +500,15 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
     return !!main_thread_scrolling_reasons_;
   }
 
-  void SetHaveWheelEventHandlers(bool have_wheel_event_handlers) {
-    have_wheel_event_handlers_ = have_wheel_event_handlers;
+  void SetWheelEventProperties(uint32_t wheel_event_properties) {
+    wheel_event_properties_ = wheel_event_properties;
   }
-  bool have_wheel_event_handlers() const { return have_wheel_event_handlers_; }
+  uint32_t wheel_event_properties() const { return wheel_event_properties_; }
+
+  void SetTouchEventProperties(uint32_t touch_event_properties) {
+    touch_event_properties_ = touch_event_properties;
+  }
+  uint32_t touch_event_properties() const { return touch_event_properties_; }
 
   void SetHaveScrollEventHandlers(bool have_scroll_event_handlers) {
     have_scroll_event_handlers_ = have_scroll_event_handlers;
@@ -775,7 +780,6 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
 
   gfx::Vector2dF offset_to_transform_parent_;
   uint32_t main_thread_scrolling_reasons_;
-  bool have_wheel_event_handlers_ : 1;
   bool have_scroll_event_handlers_ : 1;
 
   static_assert(SCROLL_BLOCKS_ON_MAX < (1 << 3), "ScrollBlocksOn too big");
@@ -811,6 +815,9 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
   // (all content was complete).
   bool was_ever_ready_since_last_transform_animation_ : 1;
 
+  uint32_t touch_event_properties_;
+  uint32_t wheel_event_properties_;
+
   Region non_fast_scrollable_region_;
   Region touch_event_handler_region_;
   SkColor background_color_;