Try to fix top crasher....

chrome/browser/cocoa/bookmark_bar_controller.mm

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/cocoa/bookmark_bar_controller.h"
 #include "app/l10n_util_mac.h"
 #include "app/resource_bundle.h"
 #include "base/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_editor.h"
@@ skipping 1355 matching lines @@
         bookmarks::kBookmarkHorizontalPadding;
 
   // As a result of pasting or dragging, the bar may now have more buttons
   // than will fit so remove any which overflow.  They will be shown in
   // the off-the-side folder.
   while (displayedButtonCount_ > 0) {
     BookmarkButton* button = [buttons_ lastObject];
     if (NSMaxX([button frame]) < maxViewX)
       break;
     [buttons_ removeLastObject];
+    [button setDelegate:nil];
     [button removeFromSuperview];
     --displayedButtonCount_;
   }
 
   // As a result of cutting, deleting and dragging, the bar may now have room
   // for more buttons.
   int xOffset = displayedButtonCount_ > 0 ?
       NSMaxX([[buttons_ lastObject] frame]) +
           bookmarks::kBookmarkHorizontalPadding : 0;
   for (int i = displayedButtonCount_; i < barCount; ++i) {
@@ skipping 47 matching lines @@
   return folderTarget_.get();
 }
 
 - (int)displayedButtonCount {
   return displayedButtonCount_;
 }
 
 // Delete all buttons (bookmarks, chevron, "other bookmarks") from the
 // bookmark bar; reset knowledge of bookmarks.
 - (void)clearBookmarkBar {
-  [buttons_ makeObjectsPerformSelector:@selector(removeFromSuperview)];
+  for (BookmarkButton* button in buttons_.get()) {
+    [button setDelegate:nil];
+    [button removeFromSuperview];
+  }
   [buttons_ removeAllObjects];
   [self clearMenuTagMap];
   displayedButtonCount_ = 0;
 
   // Make sure there are no stale pointers in the pasteboard.  This
   // can be important if a bookmark is deleted (via bookmark sync)
   // while in the middle of a drag.  The "drag completed" code
   // (e.g. [BookmarkBarView performDragOperationForBookmarkButton:]) is
   // careful enough to bail if there is no data found at "drop" time.
   //
@@ skipping 918 matching lines @@
     BookmarkButton* oldButton = [buttons_ objectAtIndex:buttonIndex];
     if (oldButton == [folderController_ parentButton]) {
       // If we are deleting a button whose folder is currently open, close it!
       [self closeAllBookmarkFolders];
     }
     NSRect poofFrame = [oldButton bounds];
     NSPoint poofPoint = NSMakePoint(NSMidX(poofFrame), NSMidY(poofFrame));
     poofPoint = [oldButton convertPoint:poofPoint toView:nil];
     poofPoint = [[oldButton window] convertBaseToScreen:poofPoint];
     NSRect oldFrame = [oldButton frame];
+    [oldButton setDelegate:nil];
     [oldButton removeFromSuperview];
     if (animate && !ignoreAnimations_ && [self isVisible])
       NSShowAnimationEffect(NSAnimationEffectDisappearingItemDefault, poofPoint,
                             NSZeroSize, nil, nil, nil);
     CGFloat xOffset = NSWidth(oldFrame) + bookmarks::kBookmarkHorizontalPadding;
     [buttons_ removeObjectAtIndex:buttonIndex];
     NSUInteger buttonCount = [buttons_ count];
     for (NSUInteger i = buttonIndex; i < buttonCount; ++i) {
       BookmarkButton* button = [buttons_ objectAtIndex:i];
       NSRect buttonFrame = [button frame];
@@ skipping 40 matching lines @@
 // to minimize touching the object passed in (likely a mock).
 - (void)setButtonContextMenu:(id)menu {
   buttonContextMenu_ = menu;
 }
 
 - (void)setIgnoreAnimations:(BOOL)ignore {
   ignoreAnimations_ = ignore;
 }
 
 @end