Remove ObserveWheelEventAndResult callbacks since they are now gesture based.

content/renderer/render_widget.cc

 // Copyright (c) 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 "content/renderer/render_widget.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 946 matching lines @@
     owner_delegate_->RenderWidgetFocusChangeComplete();
 }
 
 bool RenderWidget::HasTouchEventHandlersAt(const gfx::Point& point) const {
   if (owner_delegate_)
     return owner_delegate_->DoesRenderWidgetHaveTouchEventHandlersAt(point);
 
   return true;
 }
 
-void RenderWidget::ObserveWheelEventAndResult(
-    const blink::WebMouseWheelEvent& wheel_event,
-    const gfx::Vector2dF& wheel_unused_delta,
-    bool event_processed) {
-  if (!compositor_deps_->IsElasticOverscrollEnabled())
-    return;
-
-  cc::InputHandlerScrollResult scroll_result;
-  scroll_result.did_scroll = event_processed;
-  scroll_result.did_overscroll_root = !wheel_unused_delta.IsZero();
-  scroll_result.unused_scroll_delta = wheel_unused_delta;
-
-  RenderThreadImpl* render_thread = RenderThreadImpl::current();
-  InputHandlerManager* input_handler_manager =
-      render_thread ? render_thread->input_handler_manager() : NULL;
-  if (input_handler_manager) {
-    input_handler_manager->ObserveWheelEventAndResultOnMainThread(
-        routing_id_, wheel_event, scroll_result);
-  }
-}
-
 void RenderWidget::ObserveGestureEventAndResult(
     const blink::WebGestureEvent& gesture_event,
     const gfx::Vector2dF& unused_delta,
     bool event_processed) {
   if (!compositor_deps_->IsElasticOverscrollEnabled())
     return;
 
   cc::InputHandlerScrollResult scroll_result;
   scroll_result.did_scroll = event_processed;
   scroll_result.did_overscroll_root = !unused_delta.IsZero();
@@ skipping 1134 matching lines @@
 void RenderWidget::requestPointerUnlock() {
   mouse_lock_dispatcher_->UnlockMouse(webwidget_mouse_lock_target_.get());
 }
 
 bool RenderWidget::isPointerLocked() {
   return mouse_lock_dispatcher_->IsMouseLockedTo(
       webwidget_mouse_lock_target_.get());
 }
 
 }  // namespace content