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 6652cf22a77e170d09cec26097878703a87f2aab..ad8154625272715a21d06c1249a267c22dd9be50 100644
--- a/cc/layers/layer_impl.h
+++ b/cc/layers/layer_impl.h
@@ -499,11 +499,9 @@ 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_;
   }