Fix smooth scroll jump when switching scroll handling between MT and CC

cc/layers/layer_impl.h

Index: cc/layers/layer_impl.h
diff --git a/cc/layers/layer_impl.h b/cc/layers/layer_impl.h
index 3e23310b8cc4793e8e35b0b291ec3cdb4dc4e9b3..d4bf3848978f5e0d578e8522799a08e4ade7da99 100644
--- a/cc/layers/layer_impl.h
+++ b/cc/layers/layer_impl.h
@@ -508,11 +508,9 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
       uint32_t main_thread_scrolling_reasons) {
     main_thread_scrolling_reasons_ = main_thread_scrolling_reasons;
   }
-
   uint32_t main_thread_scrolling_reasons() const {
     return main_thread_scrolling_reasons_;
   }
-
   bool should_scroll_on_main_thread() const {
     return !!main_thread_scrolling_reasons_;
   }