[Mac] Don't crash when dragging and dropping bookmarks within a bookmarks folder.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_view.mm

 // Copyright (c) 2011 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/bookmarks/bookmark_bar_folder_view.h"
 
 #include "chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h"
 #include "chrome/browser/profiles/profile.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_folder_target.h"
@@ skipping 178 matching lines @@
     // If we're dragging from one profile to another, disallow moving (only
     // allow copying). Note that we need to call |GetOriginalProfile()| to make
     // sure that Incognito profiles are handled correctly.
     NSWindow* source_window = [[button delegate] browserWindow];
     BrowserWindowController* source_window_controller =
         [BrowserWindowController
          browserWindowControllerForWindow:source_window];
     const Profile* source_profile =
         [source_window_controller profile]->GetOriginalProfile();
     const Profile* target_profile =
-        [controller_ bookmarkModel]->profile()->GetOriginalProfile();
+        [[self controller] bookmarkModel]->profile()->GetOriginalProfile();
 
     BOOL copy =
         !([info draggingSourceOperationMask] & NSDragOperationMove) ||
         source_profile != target_profile;
     doDrag = [[self controller] dragButton:button
                                         to:[info draggingLocation]
                                       copy:copy];
     UserMetrics::RecordAction(UserMetricsAction("BookmarkBarFolder_DragEnd"));
   }
   return doDrag;
 }
 
 - (BOOL)performDragOperation:(id<NSDraggingInfo>)info {
   if ([[self controller] dragBookmarkData:info])
     return YES;
   NSPasteboard* pboard = [info draggingPasteboard];
   if ([pboard dataForType:kBookmarkButtonDragType] &&
       [self performDragOperationForBookmarkButton:info])
     return YES;
   if ([pboard containsURLData] && [self performDragOperationForURL:info])
     return YES;
   return NO;
 }
 
 @end