Send wheel gestures from event sender.

components/test_runner/event_sender.h

Index: components/test_runner/event_sender.h
diff --git a/components/test_runner/event_sender.h b/components/test_runner/event_sender.h
index 916cf88910d658fc0e4d52bd7965cfe5cfdae957..7d50ef80d6d389a8e897bb33a565791816f50f37 100644
--- a/components/test_runner/event_sender.h
+++ b/components/test_runner/event_sender.h
@@ -71,6 +71,10 @@ class EventSender : public base::SupportsWeakPtr<EventSender> {
 
   WebTaskList* mutable_task_list() { return &task_list_; }
 
+  void set_send_wheel_gestures(bool send_wheel_gestures) {
+    send_wheel_gestures_ = send_wheel_gestures;
+  }
+
  private:
   friend class EventSenderBindings;
 
@@ -135,9 +139,6 @@ class EventSender : public base::SupportsWeakPtr<EventSender> {
 
   void AddTouchPoint(float x, float y, gin::Arguments* args);
 
-  void MouseDragBegin();
-  void MouseDragEnd();
-
   void GestureScrollBegin(gin::Arguments* args);
   void GestureScrollEnd(gin::Arguments* args);
   void GestureScrollUpdate(gin::Arguments* args);
@@ -152,13 +153,9 @@ class EventSender : public base::SupportsWeakPtr<EventSender> {
   void GestureLongTap(gin::Arguments* args);
   void GestureTwoFingerTap(gin::Arguments* args);
 
-  void ContinuousMouseScrollBy(gin::Arguments* args);
+  void MouseScrollBy(gin::Arguments* args, bool continuous);
   void MouseMoveTo(gin::Arguments* args);
   void MouseLeave();
-  void TrackpadScrollBegin();
-  void TrackpadScroll(gin::Arguments* args);
-  void TrackpadScrollEnd();
-  void MouseScrollBy(gin::Arguments* args);
   void ScheduleAsynchronousClick(int button_number, int modifiers);
   void ScheduleAsynchronousKeyDown(const std::string& code_str,
                                    int modifiers,
@@ -177,7 +174,8 @@ class EventSender : public base::SupportsWeakPtr<EventSender> {
 
   void InitMouseWheelEvent(gin::Arguments* args,
                            bool continuous,
-                           blink::WebMouseWheelEvent* event);
+                           blink::WebMouseWheelEvent* event,
+                           bool* send_gestures);
   void InitPointerProperties(gin::Arguments* args,
                              blink::WebPointerProperties* e,
                              float* radius_x,
@@ -246,6 +244,7 @@ class EventSender : public base::SupportsWeakPtr<EventSender> {
   WebTestDelegate* delegate_;
   blink::WebView* view_;
 
+  bool send_wheel_gestures_;
   bool force_layout_on_events_;
 
   // When set to true (the default value), we batch mouse move and mouse up