Revert "Fix a ton of compiler warnings."

chrome/browser/bookmarks/bookmark_model_observer.h

Index: chrome/browser/bookmarks/bookmark_model_observer.h
diff --git a/chrome/browser/bookmarks/bookmark_model_observer.h b/chrome/browser/bookmarks/bookmark_model_observer.h
index 738fc09e79e3c7bbe53b2917e35c53759a3f3982..1b85fe3b5abfedf2c18812de386ad2dff22843d1 100644
--- a/chrome/browser/bookmarks/bookmark_model_observer.h
+++ b/chrome/browser/bookmarks/bookmark_model_observer.h
@@ -15,7 +15,7 @@ class BookmarkModelObserver {
   virtual void Loaded(BookmarkModel* model) = 0;
 
   // Invoked from the destructor of the BookmarkModel.
-  virtual void BookmarkModelBeingDeleted(BookmarkModel* model) {}
+  virtual void BookmarkModelBeingDeleted(BookmarkModel* model) { }
 
   // Invoked when a node has moved.
   virtual void BookmarkNodeMoved(BookmarkModel* model,
@@ -51,9 +51,6 @@ class BookmarkModelObserver {
   // |node| have been reordered in some way, such as sorted.
   virtual void BookmarkNodeChildrenReordered(BookmarkModel* model,
                                              const BookmarkNode* node) = 0;
-
- protected:
-  ~BookmarkModelObserver() {}
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_H_