touch: Cleanup touch-event mode switching on windows.

content/port/browser/render_widget_host_view_port.h

Index: content/port/browser/render_widget_host_view_port.h
diff --git a/content/port/browser/render_widget_host_view_port.h b/content/port/browser/render_widget_host_view_port.h
index c7a7b4f91722b5abf91b4afa06be53e42ad7126f..29e23041ea7c55cae44475da53c9a5a940dc2f28 100644
--- a/content/port/browser/render_widget_host_view_port.h
+++ b/content/port/browser/render_widget_host_view_port.h
@@ -263,8 +263,7 @@ class CONTENT_EXPORT RenderWidgetHostViewPort : public RenderWidgetHostView {
   // prevent-default on a dispatched touch event, the touch events are queued in
   // the GestureRecognizer until invocation of ProcessTouchAck releases it to be
   // processed (when |processed| is false) or ignored (when |processed| is true)
-  virtual void ProcessTouchAck(WebKit::WebInputEvent::Type type,
-                               bool processed) = 0;
+  virtual void ProcessTouchAck(bool processed) = 0;
 
   // Asks the view to create a smooth scroll gesture that will be used to
   // simulate a user-initiated scroll.