From 6fa34069129ddbe99fc70899c2c0e7c215f82ec5 Mon Sep 17 00:00:00 2001
From: Gellert Hegyi <gellert.hegyi@around.co>
Date: Thu, 23 Jul 2020 02:54:32 +0200
Subject: [PATCH] fix: remove corner mask override to increase window resize
 performance (#24642)

* fix: remove corner mask override to increase window resize performance

* uses corner mask only for vibrant view
---
 shell/browser/ui/cocoa/electron_ns_window.mm | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/shell/browser/ui/cocoa/electron_ns_window.mm b/shell/browser/ui/cocoa/electron_ns_window.mm
index 8da315c8f6bd..9a0674b31381 100644
--- a/shell/browser/ui/cocoa/electron_ns_window.mm
+++ b/shell/browser/ui/cocoa/electron_ns_window.mm
@@ -17,6 +17,10 @@ bool ScopedDisableResize::disable_resize_ = false;
 
 }  // namespace electron
 
+@interface NSWindow (PrivateAPI)
+- (NSImage*)_cornerMask;
+@end
+
 @implementation ElectronNSWindow
 
 @synthesize acceptsFirstMouse;
@@ -158,7 +162,11 @@ bool ScopedDisableResize::disable_resize_ = false;
 // By overriding this built-in method the corners of the vibrant view (if set)
 // will be smooth.
 - (NSImage*)_cornerMask {
-  return [self cornerMask];
+  if (self.vibrantView != nil) {
+    return [self cornerMask];
+  } else {
+    return [super _cornerMask];
+  }
 }
 
 // Quicklook methods