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

content/browser/web_contents/web_contents_view_aura.cc

 // 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.
 
 #include "content/browser/web_contents/web_contents_view_aura.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/auto_reset.h"
@@ skipping 934 matching lines @@
     const gfx::Vector2d& image_offset,
     const DragEventSourceInfo& event_info,
     RenderWidgetHostImpl* source_rwh) {
   aura::Window* root_window = GetNativeView()->GetRootWindow();
   if (!aura::client::GetDragDropClient(root_window)) {
     web_contents_->SystemDragEnded(source_rwh);
     return;
   }
 
   // Grab a weak pointer to the RenderWidgetHost, since it can be destroyed
-  // during the drag and drop nested message loop in StartDragAndDrop.
+  // during the drag and drop nested run loop in StartDragAndDrop.
   // For example, the RenderWidgetHost can be deleted if a cross-process
   // transfer happens while dragging, since the RenderWidgetHost is deleted in
   // that case.
   base::WeakPtr<RenderWidgetHostImpl> source_rwh_weak_ptr =
       source_rwh->GetWeakPtr();
 
   drag_start_process_id_ = source_rwh->GetProcess()->GetID();
   drag_start_view_id_ = GetRenderViewHostID(web_contents_->GetRenderViewHost());
 
   ui::TouchSelectionController* selection_controller = GetSelectionController();
@@ skipping 374 matching lines @@
                                         bool allow_multiple_selection) {
   NOTIMPLEMENTED() << " show " << items.size() << " menu items";
 }
 
 void WebContentsViewAura::HidePopupMenu() {
   NOTIMPLEMENTED();
 }
 #endif
 
 }  // namespace content