Split cocoa_event_utils in two parts.

chrome/browser/ui/cocoa/bookmarks/bookmark_folder_target.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_folder_target.h"
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_node_data.h"
 #include "chrome/browser/bookmarks/bookmark_pasteboard_helper_mac.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_controller.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_button.h"
-#import "ui/base/cocoa/cocoa_event_utils.h"
+#import "ui/base/cocoa/cocoa_base_utils.h"
 
 NSString* kBookmarkButtonDragType = @"ChromiumBookmarkButtonDragType";
 
 @interface BookmarkFolderTarget()
 // Copies the given bookmark node to the given pasteboard, declaring appropriate
 // types (to paste a URL with a title).
 - (void)copyBookmarkNode:(const BookmarkNode*)node
         toDragPasteboard:(NSPasteboard*)pboard;
 @end
 
@@ skipping 90 matching lines @@
     [pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]
                owner:nil];
     [pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]
             forType:kBookmarkButtonDragType];
   } else {
     NOTREACHED();
   }
 }
 
 @end