events: Update scroll and touch handlers to not return EventResult.

ui/views/corewm/compound_event_filter.h

Index: ui/views/corewm/compound_event_filter.h
diff --git a/ui/views/corewm/compound_event_filter.h b/ui/views/corewm/compound_event_filter.h
index a995fb6ac3d74823e77da3e037846a539627afb8..223b0b6264d0ef90b128649174ab7a5fc6f296b4 100644
--- a/ui/views/corewm/compound_event_filter.h
+++ b/ui/views/corewm/compound_event_filter.h
@@ -65,7 +65,7 @@ class VIEWS_EXPORT CompoundEventFilter : public ui::EventHandler {
   // Dispatches event to additional filters.
   ui::EventResult FilterKeyEvent(ui::KeyEvent* event);
   ui::EventResult FilterMouseEvent(ui::MouseEvent* event);
-  ui::EventResult FilterTouchEvent(ui::TouchEvent* event);
+  void FilterTouchEvent(ui::TouchEvent* event);
 
   // Sets the visibility of the cursor if the event is not synthesized and
   // 1) it's hiding (show=false) when the cursor is currently shown, or
@@ -80,8 +80,8 @@ class VIEWS_EXPORT CompoundEventFilter : public ui::EventHandler {
   // Overridden from ui::EventHandler:
   virtual ui::EventResult OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
   virtual ui::EventResult OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
-  virtual ui::EventResult OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
-  virtual ui::EventResult OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
+  virtual void OnScrollEvent(ui::ScrollEvent* event) OVERRIDE;
+  virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
 
   // Additional pre-target event handlers.