Fix build issue in Debug mode

ui/events/blink/input_handler_proxy.cc

Index: ui/events/blink/input_handler_proxy.cc
diff --git a/ui/events/blink/input_handler_proxy.cc b/ui/events/blink/input_handler_proxy.cc
index dff25a6404e5c2457dd350b1234eb36231470f28..05dfaaa5399dc44b3d83d448db9ede08bcc5f4e2 100644
--- a/ui/events/blink/input_handler_proxy.cc
+++ b/ui/events/blink/input_handler_proxy.cc
@@ -601,12 +601,11 @@ InputHandlerProxy::HandleGestureScrollUpdate(
       default:
         return DID_NOT_HANDLE;
     }
-  } else {
-    cc::InputHandlerScrollResult scroll_result =
-        input_handler_->ScrollBy(&scroll_state);
-    HandleOverscroll(scroll_point, scroll_result);
-    return scroll_result.did_scroll ? DID_HANDLE : DROP_EVENT;
   }
+  cc::InputHandlerScrollResult scroll_result =
+      input_handler_->ScrollBy(&scroll_state);
+  HandleOverscroll(scroll_point, scroll_result);
+  return scroll_result.did_scroll ? DID_HANDLE : DROP_EVENT;
 }
 
 InputHandlerProxy::EventDisposition InputHandlerProxy::HandleGestureScrollEnd(