From 8a11e4f2de84bf123bf247314d099fa6538ac653 Mon Sep 17 00:00:00 2001
From: stuartmorgan <stuartmorgan@google.com>
Date: Mon, 2 Dec 2019 16:33:04 -0800
Subject: [PATCH] Report backing store changes in the macOS view
 (flutter/engine#13933)

---
 .../platform/darwin/macos/framework/Source/FlutterView.mm    | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/engine/src/flutter/shell/platform/darwin/macos/framework/Source/FlutterView.mm b/engine/src/flutter/shell/platform/darwin/macos/framework/Source/FlutterView.mm
index c255106a419..1b46ac600ed 100644
--- a/engine/src/flutter/shell/platform/darwin/macos/framework/Source/FlutterView.mm
+++ b/engine/src/flutter/shell/platform/darwin/macos/framework/Source/FlutterView.mm
@@ -48,4 +48,9 @@
   return YES;
 }
 
+- (void)viewDidChangeBackingProperties {
+  [super viewDidChangeBackingProperties];
+  [_reshapeListener viewDidReshape:self];
+}
+
 @end