Revert of Remove enable/disable wheel gestures setting.

components/test_runner/web_test_proxy.h

 // 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.
 
 #ifndef COMPONENTS_TEST_RUNNER_WEB_TEST_PROXY_H_
 #define COMPONENTS_TEST_RUNNER_WEB_TEST_PROXY_H_
 
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 78 matching lines @@
   void set_delegate(WebTestDelegate* delegate) {
     DCHECK(delegate);
     DCHECK(!delegate_);
     delegate_ = delegate;
   }
 
   TestInterfaces* test_interfaces() { return test_interfaces_; }
   void SetInterfaces(WebTestInterfaces* web_test_interfaces);
 
   EventSender* event_sender() { return event_sender_.get(); }
+  void SetSendWheelGestures(bool send_gestures);
 
   AccessibilityController* accessibility_controller() {
     return accessibility_controller_.get();
   }
 
   TestRunnerForSpecificView* view_test_runner() {
     return view_test_runner_.get();
   }
 
   void Reset();
@@ skipping 141 matching lines @@
 
  private:
   virtual ~WebTestProxy() {}
 
   DISALLOW_COPY_AND_ASSIGN(WebTestProxy);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_WEB_TEST_PROXY_H_