From ea451bc5b1fe38975403afe723cdd34472fd125b Mon Sep 17 00:00:00 2001
From: Benoit Girard <b56girard@gmail.com>
Date: Wed, 10 Aug 2011 10:12:25 -0400
Subject: [PATCH] Bug 671916 - Fix windowless Flash Player painting crash;
 r=cjones

---
 dom/plugins/ipc/PluginInstanceChild.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dom/plugins/ipc/PluginInstanceChild.cpp b/dom/plugins/ipc/PluginInstanceChild.cpp
index 4ed9ae31c18..463b2afb696 100644
--- a/dom/plugins/ipc/PluginInstanceChild.cpp
+++ b/dom/plugins/ipc/PluginInstanceChild.cpp
@@ -3518,7 +3518,13 @@ PluginInstanceChild::SwapSurfaces()
 
         mDoubleBufferCARenderer.ClearFrontSurface();
     }
-#endif //MOZ_WIDGET_COCOA
+#else
+    if (mCurrentSurface && mBackSurface &&
+        (mCurrentSurface->GetSize() != mBackSurface->GetSize() ||
+         mCurrentSurface->GetContentType() != mBackSurface->GetContentType())) {
+        ClearCurrentSurface();
+    }
+#endif
 }
 
 void