Replace old with new synthetic gesture framework.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index ee2a48a67643a3a39bec4092ee4e94f167bce357..1b8f46e42732ef5644fca220d97be0ecc2ce4d8d 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -29,7 +29,6 @@
 #include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
-#include "content/browser/renderer_host/touch_smooth_scroll_gesture_aura.h"
 #include "content/browser/renderer_host/ui_events_helper.h"
 #include "content/browser/renderer_host/web_input_event_aura.h"
 #include "content/common/gpu/client/gl_helper.h"
@@ -2019,18 +2018,6 @@ RenderWidgetHostViewAura::CreateSyntheticGestureTarget() {
       new SyntheticGestureTargetAura(host_));
 }
 
-SyntheticGesture* RenderWidgetHostViewAura::CreateSmoothScrollGesture(
-    bool scroll_down,
-    int pixels_to_scroll,
-    int mouse_event_x,
-    int mouse_event_y) {
-  return new TouchSmoothScrollGestureAura(scroll_down,
-                                          pixels_to_scroll,
-                                          mouse_event_x,
-                                          mouse_event_y,
-                                          window_);
-}
-
 void RenderWidgetHostViewAura::SetHasHorizontalScrollbar(
     bool has_horizontal_scrollbar) {
   // Not needed. Mac-only.