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

ui/views/controls/menu/menu_controller.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_
 
 #include <stddef.h>
 
 #include <list>
@@ skipping 290 matching lines @@
   // to show/hide submenus and update state_.
   void SetSelection(MenuItemView* menu_item, int types);
 
   void SetSelectionOnPointerDown(SubmenuView* source,
                                  const ui::LocatedEvent* event);
   void StartDrag(SubmenuView* source, const gfx::Point& location);
 
   // Key processing.
   void OnKeyDown(ui::KeyboardCode key_code);
 
-  // Creates a MenuController. If |blocking| is true a nested message loop is
+  // Creates a MenuController. If |blocking| is true a nested run loop is
   // started in |Run|.
   MenuController(bool blocking,
                  internal::MenuControllerDelegate* delegate);
 
   ~MenuController() override;
 
   // Runs the platform specific bits of the message loop.
   void RunMessageLoop();
 
   // Invokes AcceleratorPressed() on the hot tracked view if there is one.
@@ skipping 360 matching lines @@
 #if defined(USE_AURA)
   std::unique_ptr<MenuPreTargetHandler> menu_pre_target_handler_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(MenuController);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_