Remove enable/disable wheel gestures setting.

cc/debug/debug_rect_history.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/debug/debug_rect_history.h"
 
 #include <stddef.h>
 
 #include "base/memory/ptr_util.h"
 #include "cc/base/math_util.h"
@@ skipping 161 matching lines @@
                   MathUtil::MapEnclosingClippedRect(
                       layer->ScreenSpaceTransform(), iter.rect())));
   }
 }
 
 void DebugRectHistory::SaveWheelEventHandlerRects(LayerImpl* root_layer) {
   EventListenerProperties event_properties =
       root_layer->layer_tree_impl()->event_listener_properties(
           EventListenerClass::kMouseWheel);
   if (event_properties == EventListenerProperties::kNone ||
-      (root_layer->layer_tree_impl()->settings().use_mouse_wheel_gestures &&
-       event_properties == EventListenerProperties::kPassive)) {
+      event_properties == EventListenerProperties::kPassive) {
     return;
   }
 
   // Since the wheel event handlers property is on the entire layer tree just
   // mark inner viewport if have listeners.
   LayerImpl* inner_viewport =
       root_layer->layer_tree_impl()->InnerViewportScrollLayer();
   if (!inner_viewport)
     return;
   debug_rects_.push_back(DebugRect(
@@ skipping 52 matching lines @@
     debug_rects_.push_back(
         DebugRect(ANIMATION_BOUNDS_RECT_TYPE,
                   gfx::ToEnclosingRect(gfx::RectF(inflated_bounds.x(),
                                                   inflated_bounds.y(),
                                                   inflated_bounds.width(),
                                                   inflated_bounds.height()))));
   }
 }
 
 }  // namespace cc