Fix crash under ExclusiveAccessBubbleViews::AnimationProgressed().

chrome/browser/ui/views/exclusive_access_bubble_views_context.h

Index: chrome/browser/ui/views/exclusive_access_bubble_views_context.h
diff --git a/chrome/browser/ui/views/exclusive_access_bubble_views_context.h b/chrome/browser/ui/views/exclusive_access_bubble_views_context.h
index d2300ea5f678a7ebfd51380b3d9fd7f6a98e2a6a..e5da3b369becaf88fe5be4868a5bf24b2fd85204 100644
--- a/chrome/browser/ui/views/exclusive_access_bubble_views_context.h
+++ b/chrome/browser/ui/views/exclusive_access_bubble_views_context.h
@@ -47,6 +47,11 @@ class ExclusiveAccessBubbleViewsContext {
 
   // Returns the bounds of the top level View in screen coordinate system.
   virtual gfx::Rect GetTopContainerBoundsInScreen() = 0;
+
+  // Destroy any exclusive access bubble. This allows the bubble to ask its
+  // owner to clean up when the bubble observes its native widget being
+  // destroyed before the owner requested it.
+  virtual void DestroyAnyExclusiveAccessBubble() = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXCLUSIVE_ACCESS_BUBBLE_VIEWS_CONTEXT_H_