Don't send touch move to renderer while scrolling

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 5da93328871cfcf7d7d054241a232e204e83c67e..3a21e055cf22b58411046917445e9b64eba07be9 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -332,6 +332,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
 
   bool ShouldForwardTouchEvent() const;
 
+  bool& scroll_update_in_progress() { return scroll_update_in_progress_; }
+  bool& skip_next_acked_touch_cancel(){ return skip_next_acked_touch_cancel_; }
+
   bool has_touch_handler() const { return has_touch_handler_; }
 
   // Notification that the user has made some kind of input that could
@@ -887,6 +890,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   bool pending_mouse_lock_request_;
   bool allow_privileged_mouse_lock_;
 
+  bool scroll_update_in_progress_;
+  bool skip_next_acked_touch_cancel_;
+
   // Keeps track of whether the webpage has any touch event handler. If it does,
   // then touch events are sent to the renderer. Otherwise, the touch events are
   // not sent to the renderer.