From 9dbdc4bee6818536eaeea7f7e285922d2ae2cae7 Mon Sep 17 00:00:00 2001
From: Chinmay Garde <chinmaygarde@gmail.com>
Date: Tue, 18 Jul 2017 14:29:36 -0700
Subject: [PATCH] Fix Mac desktop platform for use with std::weak_ptr in the
 PlatformView. (flutter/engine#3897)

---
 .../flutter/shell/platform/darwin/desktop/flutter_window.mm   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/engine/src/flutter/shell/platform/darwin/desktop/flutter_window.mm b/engine/src/flutter/shell/platform/darwin/desktop/flutter_window.mm
index 683bf4a3668..912a32ff6e2 100644
--- a/engine/src/flutter/shell/platform/darwin/desktop/flutter_window.mm
+++ b/engine/src/flutter/shell/platform/darwin/desktop/flutter_window.mm
@@ -37,7 +37,7 @@ static inline blink::PointerData::Change PointerChangeFromNSEventPhase(NSEventPh
 }
 
 @implementation FlutterWindow {
-  std::unique_ptr<shell::PlatformViewMac> _platformView;
+  std::shared_ptr<shell::PlatformViewMac> _platformView;
   bool _mouseIsDown;
 }
 
@@ -55,7 +55,7 @@ static inline blink::PointerData::Change PointerChangeFromNSEventPhase(NSEventPh
 - (void)setupPlatformView {
   FTL_DCHECK(_platformView == nullptr) << "The platform view must not already be set.";
 
-  _platformView.reset(new shell::PlatformViewMac(self.renderSurface));
+  _platformView = std::make_shared<shell::PlatformViewMac>(self.renderSurface);
   _platformView->Attach();
   _platformView->SetupResourceContextOnIOThread();
   _platformView->NotifyCreated(std::make_unique<shell::GPUSurfaceGL>(_platformView.get()));