[Mac] Re-layout download shelf when danger state of item changes.

chrome/browser/ui/cocoa/download/download_item_controller.mm

 // Copyright (c) 2012 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/ui/cocoa/download/download_item_controller.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string16.h"
@@ skipping 192 matching lines @@
     NSPoint frameOrigin = [dangerousButtonTweaker_ frame].origin;
     frameOrigin.x += labelWidthChange;
     [dangerousButtonTweaker_ setFrameOrigin:frameOrigin];
 
     [dangerousButtonTweaker_ setHidden:NO];
     [maliciousButtonTweaker_ setHidden:YES];
   }
   DCHECK(alertIcon);
   [image_ setImage:alertIcon];
 
-  // Grow the parent views
-  WidenView([self view], labelWidthChange + buttonWidthChange);
   WidenView(dangerousDownloadView_, labelWidthChange + buttonWidthChange);
+  [shelf_ layoutItems];
 }
 
 - (void)setStateFromDownload:(DownloadItemModel*)downloadModel {
   DCHECK_EQ([self download], downloadModel->download());
 
   // Handle dangerous downloads.
   if (downloadModel->IsDangerous()) {
     [self showDangerousWarning:downloadModel];
     return;
   }
@@ skipping 139 matching lines @@
   base::scoped_nsobject<DownloadShelfContextMenuController> menuController(
       [[DownloadShelfContextMenuController alloc]
         initWithItemController:self
                   withDelegate:nil]);
   [NSMenu popUpContextMenu:[menuController menu]
                  withEvent:[NSApp currentEvent]
                    forView:[self view]];
 }
 
 @end