From 4f93bbbe69f73e9c7695480def123cf61a0e60b8 Mon Sep 17 00:00:00 2001
From: Stuart Morgan <stuart.morgan+bugzilla@gmail.com>
Date: Fri, 14 Nov 2008 10:24:16 +0000
Subject: [PATCH] Bug 156583: Stray QuickTime, Real, or Java plugin frame can
 appear after switching to another tab. r=smichaud, sr=roc, a1.9.1b2=beltzner

---
 widget/src/cocoa/nsChildView.mm | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/widget/src/cocoa/nsChildView.mm b/widget/src/cocoa/nsChildView.mm
index 17d1d0761c7..a46e6e8a2f2 100644
--- a/widget/src/cocoa/nsChildView.mm
+++ b/widget/src/cocoa/nsChildView.mm
@@ -2831,6 +2831,19 @@ NSEvent* gLastDragEvent = nil;
 }
 
 
+- (void)viewWillMoveToWindow:(NSWindow *)newWindow
+{
+  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
+
+  if (!newWindow)
+    HideChildPluginViews(self);
+
+  [super viewWillMoveToWindow:newWindow];
+
+  NS_OBJC_END_TRY_ABORT_BLOCK;
+}
+
+
 - (void)viewWillStartLiveResize
 {
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK;