Replace "nested message loop" with "nested run loop" in comments.

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

 // Copyright 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.
 
 #include "chrome/browser/ui/bookmarks/bookmark_drag_drop.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include <cmath>
 
@@ skipping 37 matching lines @@
 }  // namespace
 
 namespace chrome {
 
 void DragBookmarks(Profile* profile,
                    const std::vector<const BookmarkNode*>& nodes,
                    gfx::NativeView view,
                    ui::DragDropTypes::DragEventSource source) {
   DCHECK(!nodes.empty());
 
-  // Allow nested message loop so we get DnD events as we drag this around.
+  // Allow nested run loop so we get DnD events as we drag this around.
   base::MessageLoop::ScopedNestableTaskAllower nestable_task_allower(
       base::MessageLoop::current());
 
   bookmarks::BookmarkNodeData drag_data(nodes);
   drag_data.SetOriginatingProfilePath(profile->GetPath());
   drag_data.WriteToClipboard(ui::CLIPBOARD_TYPE_DRAG);
 
   // Synthesize an event for dragging, since we can't be sure that
   // [NSApp currentEvent] will return a valid dragging event.
   NSWindow* window = [view window];
@@ skipping 18 matching lines @@
   [window dragImage:drag_image
                  at:position
              offset:NSZeroSize
               event:drag_event
          pasteboard:[NSPasteboard pasteboardWithName:NSDragPboard]
              source:nil
           slideBack:YES];
 }
 
 }  // namespace chrome