Revert of Remove enable/disable wheel gestures setting.

components/test_runner/event_sender.cc

 // Copyright 2014 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 "components/test_runner/event_sender.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 1178 matching lines @@
     WebMouseEvent::ButtonNone;
 
 EventSender::SavedEvent::SavedEvent()
     : type(TYPE_UNSPECIFIED),
       button_type(WebMouseEvent::ButtonNone),
       milliseconds(0),
       modifiers(0) {}
 
 EventSender::EventSender(WebTestProxyBase* web_test_proxy_base)
     : web_test_proxy_base_(web_test_proxy_base),
+      send_wheel_gestures_(false),
       replaying_saved_events_(false),
       weak_factory_(this) {
   Reset();
 }
 
 EventSender::~EventSender() {}
 
 void EventSender::Reset() {
   DCHECK(current_drag_data_.isNull());
   current_drag_data_.reset();
@@ skipping 1330 matching lines @@
       if (!args->PeekNext().IsEmpty()) {
         v8::Local<v8::Value> value;
         args->GetNext(&value);
         modifiers = GetKeyModifiersFromV8(args->isolate(), value);
         if (!args->PeekNext().IsEmpty()) {
           args->GetNext(&can_scroll);
         }
       }
     }
   }
-  if (can_scroll) {
+  if (can_scroll && send_wheel_gestures_) {
     can_scroll = false;
     *send_gestures = true;
   }
 
   InitMouseEvent(WebInputEvent::MouseWheel,
                  current_pointer_state_[kMousePointerId].pressed_button_,
                  current_pointer_state_[kMousePointerId].current_buttons_,
                  current_pointer_state_[kMousePointerId].last_pos_,
                  GetCurrentEventTimeSec(),
                  click_count_,
@@ skipping 253 matching lines @@
 
 const blink::WebView* EventSender::view() const {
   return web_test_proxy_base_->web_view();
 }
 
 blink::WebView* EventSender::view() {
   return web_test_proxy_base_->web_view();
 }
 
 }  // namespace test_runner