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  changeset:   312068:73cc9a2d8fc1
  user:        Timothy Nikkel <tnikkel@gmail.com>
  Date:        Tue May 10 22:58:47 2016 -0500
  summary:     Bug 1261752. Part 2. r=mats a=ritu

diff -r 380ddd689680 -r 73cc9a2d8fc1 view/nsViewManager.cpp
--- a/view/nsViewManager.cpp	Tue May 10 22:58:26 2016 -0500
+++ b/view/nsViewManager.cpp	Tue May 10 22:58:47 2016 -0500
@@ -372,7 +372,7 @@
     }
   }
   if (rootShell->GetViewManager() != this) {
-    return; // 'this' might have been destroyed
+    return; // presentation might have been torn down
   }
   if (aFlushDirtyRegion) {
     nsAutoScriptBlocker scriptBlocker;
@@ -1069,6 +1069,7 @@
   if (mPresShell) {
     mPresShell->GetPresContext()->RefreshDriver()->RevokeViewManagerFlush();
 
+    RefPtr<nsViewManager> strongThis(this);
     CallWillPaintOnObservers();
 
     ProcessPendingUpdatesForView(mRootView, true);
@@ -1085,6 +1086,7 @@
 
   if (mHasPendingWidgetGeometryChanges) {
     mHasPendingWidgetGeometryChanges = false;
+    RefPtr<nsViewManager> strongThis(this);
     ProcessPendingUpdatesForView(mRootView, false);
   }
 }