Makes it so when NSViewControllers go away that they remove their views from ...

chrome/browser/cocoa/find_bar_cocoa_controller.mm

Index: chrome/browser/cocoa/find_bar_cocoa_controller.mm
===================================================================
--- chrome/browser/cocoa/find_bar_cocoa_controller.mm	(revision 28822)
+++ chrome/browser/cocoa/find_bar_cocoa_controller.mm	(working copy)
@@ -50,6 +50,9 @@
   // All animations should be explicitly stopped by the TabContents before a tab
   // is closed.
   DCHECK(!currentAnimation_.get());
+  // Remove our view from its superview so it doesn't attempt to reference
+  // it when the controller is gone.
+  [[self view] removeFromSuperview];
   [[NSNotificationCenter defaultCenter] removeObserver:self];
   [super dealloc];
 }