Move have_wheel_event_handlers to WebLayerTreeView.

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 2013 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 "content/renderer/gpu/render_widget_compositor.h"
 
 #include <stddef.h>
 #include <limits>
 #include <string>
 #include <utility>
@@ skipping 727 matching lines @@
 void RenderWidgetCompositor::registerSelection(
     const blink::WebSelection& selection) {
   layer_tree_host_->RegisterSelection(ConvertWebSelection(selection));
 }
 
 void RenderWidgetCompositor::clearSelection() {
   cc::LayerSelection empty_selection;
   layer_tree_host_->RegisterSelection(empty_selection);
 }
 
+void RenderWidgetCompositor::setHaveWheelEventHandlers(bool value) {
+  layer_tree_host_->SetHaveWheelEventHandlers(value);
+}
+
 void CompositeAndReadbackAsyncCallback(
     blink::WebCompositeAndReadbackAsyncCallback* callback,
     scoped_ptr<cc::CopyOutputResult> result) {
   if (result->HasBitmap()) {
     scoped_ptr<SkBitmap> result_bitmap = result->TakeBitmap();
     callback->didCompositeAndReadback(*result_bitmap);
   } else {
     callback->didCompositeAndReadback(SkBitmap());
   }
 }
@@ skipping 342 matching lines @@
 #endif
   return actual;
 }
 
 void RenderWidgetCompositor::SetPaintedDeviceScaleFactor(
     float device_scale) {
   layer_tree_host_->SetPaintedDeviceScaleFactor(device_scale);
 }
 
 }  // namespace content