Remove enable/disable wheel gestures setting.

content/renderer/input/input_handler_wrapper.h

 // Copyright 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.
 
 #ifndef CONTENT_RENDERER_INPUT_INPUT_HANDLER_WRAPPER_H_
 #define CONTENT_RENDERER_INPUT_INPUT_HANDLER_WRAPPER_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 10 matching lines @@
 
 // This class lives on the compositor thread.
 class InputHandlerWrapper : public ui::InputHandlerProxyClient {
  public:
   InputHandlerWrapper(
       InputHandlerManager* input_handler_manager,
       int routing_id,
       const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner,
       const base::WeakPtr<cc::InputHandler>& input_handler,
       const base::WeakPtr<RenderViewImpl>& render_view_impl,
-      bool enable_smooth_scrolling,
-      bool enable_wheel_gestures);
+      bool enable_smooth_scrolling);
   ~InputHandlerWrapper() override;
 
   int routing_id() const { return routing_id_; }
   ui::InputHandlerProxy* input_handler_proxy() {
     return &input_handler_proxy_;
   }
 
   // InputHandlerProxyClient implementation.
   void WillShutdown() override;
   void TransferActiveWheelFlingAnimation(
@@ skipping 19 matching lines @@
 
   // Can only be accessed on the main thread.
   base::WeakPtr<RenderViewImpl> render_view_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(InputHandlerWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_INPUT_HANDLER_WRAPPER_H_