From 6db23ae65e0eda8c95464ff93dfc676a4470c11d Mon Sep 17 00:00:00 2001
From: wicknix <39230578+wicknix@users.noreply.github.com>
Date: Wed, 24 Oct 2018 01:10:07 -0500
Subject: Bug 1489785: Remove a workaround for gcc

Introduced in bug 678607, that is no longer needed and causes hangs in modal dialogs on macOS 10.14.
https://hg.mozilla.org/mozilla-central/rev/3920c858319d
---
 widget/cocoa/nsChildView.mm | 53 +--------------------------------------------
 1 file changed, 1 insertion(+), 52 deletions(-)

(limited to 'widget/cocoa')

diff --git a/widget/cocoa/nsChildView.mm b/widget/cocoa/nsChildView.mm
index 8f72a81be..acbf4175d 100644
--- a/widget/cocoa/nsChildView.mm
+++ b/widget/cocoa/nsChildView.mm
@@ -425,13 +425,7 @@ nsChildView::Create(nsIWidget* aParent,
   if (!gChildViewMethodsSwizzled) {
     nsToolkit::SwizzleMethods([NSView class], @selector(mouseDownCanMoveWindow),
                               @selector(nsChildView_NSView_mouseDownCanMoveWindow));
-#ifdef __LP64__
-    nsToolkit::SwizzleMethods([NSEvent class], @selector(addLocalMonitorForEventsMatchingMask:handler:),
-                              @selector(nsChildView_NSEvent_addLocalMonitorForEventsMatchingMask:handler:),
-                              true);
-    nsToolkit::SwizzleMethods([NSEvent class], @selector(removeMonitor:),
-                              @selector(nsChildView_NSEvent_removeMonitor:), true);
-#endif
+
     gChildViewMethodsSwizzled = true;
   }
 
@@ -6513,48 +6507,3 @@ static const CGEventField kCGWindowNumberField = (const CGEventField) 51;
 }
 
 @end
-
-#ifdef __LP64__
-// When using blocks, at least on OS X 10.7, the OS sometimes calls
-// +[NSEvent removeMonitor:] more than once on a single event monitor, which
-// causes crashes.  See bug 678607.  We hook these methods to work around
-// the problem.
-@interface NSEvent (MethodSwizzling)
-+ (id)nsChildView_NSEvent_addLocalMonitorForEventsMatchingMask:(unsigned long long)mask handler:(id)block;
-+ (void)nsChildView_NSEvent_removeMonitor:(id)eventMonitor;
-@end
-
-// This is a local copy of the AppKit frameworks sEventObservers hashtable.
-// It only stores "local monitors".  We use it to ensure that +[NSEvent
-// removeMonitor:] is never called more than once on the same local monitor.
-static NSHashTable *sLocalEventObservers = nil;
-
-@implementation NSEvent (MethodSwizzling)
-
-+ (id)nsChildView_NSEvent_addLocalMonitorForEventsMatchingMask:(unsigned long long)mask handler:(id)block
-{
-  if (!sLocalEventObservers) {
-    sLocalEventObservers = [[NSHashTable hashTableWithOptions:
-      NSHashTableStrongMemory | NSHashTableObjectPointerPersonality] retain];
-  }
-  id retval =
-    [self nsChildView_NSEvent_addLocalMonitorForEventsMatchingMask:mask handler:block];
-  if (sLocalEventObservers && retval && ![sLocalEventObservers containsObject:retval]) {
-    [sLocalEventObservers addObject:retval];
-  }
-  return retval;
-}
-
-+ (void)nsChildView_NSEvent_removeMonitor:(id)eventMonitor
-{
-  if (sLocalEventObservers && [eventMonitor isKindOfClass: ::NSClassFromString(@"_NSLocalEventObserver")]) {
-    if (![sLocalEventObservers containsObject:eventMonitor]) {
-      return;
-    }
-    [sLocalEventObservers removeObject:eventMonitor];
-  }
-  [self nsChildView_NSEvent_removeMonitor:eventMonitor];
-}
-
-@end
-#endif // #ifdef __LP64__
-- 
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