- Electron version: v1.3.3
- Operating system: OS X 10.11.6

v1.3.3 broke the detection of the `scroll-touch-begin` and `scroll-touch-end` events for me within a `webview`. It looks like the pull request #6754 caused this issue. v1.3.2 works as expected.

Behavior that I'm observing on v1.3.3:
- Most of the time, the `scroll-touch-*` events are not emitted when the cursor is on top of a `webview`.
- The `scroll-touch-*` events seem to be emitted _only once_ when the cursor is on a `webview` and on a scrollable element. The scrollable elements in my app have no native scrollbar set (they have the style `overflow: hidden;` set instead of `overflow: scroll;`). This is the case in which I need to receive the `scroll-touch-*` events.
- The `scroll-touch-*` events seem to work fine when the cursor is outside of the `webview` tag.

atom/browser/native_window.h
void RenderViewCreated(content::RenderViewHost* render_view_host) override;
  void BeforeUnloadDialogCancelled() override;
  void DidFirstVisuallyNonEmptyPaint() override;
  bool OnMessageReceived(const IPC::Message& message) override;
 private:
  
  void ScheduleUnresponsiveEvent(int ms);
  
  void NotifyWindowUnresponsive();
  
  void NotifyReadyToShow();
  
  bool has_frame_;
  
  bool transparent_;
  
  
  std::unique_ptr<SkRegion> draggable_region_;  
  
  extensions::SizeConstraints size_constraints_;
  
  bool enable_larger_than_screen_;
  
  bool is_closed_;
  
  
  base::CancelableClosure window_unresposive_closure_;