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

ui/views/widget/desktop_aura/desktop_native_widget_aura_unittest.cc

 // Copyright 2013 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 "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 443 matching lines @@
       display::Screen::GetScreen()->GetDisplayNearestPoint(gfx::Point()));
 
   EXPECT_EQ(new_pos,
             popup_window.top_level_widget()->GetWindowBoundsInScreen());
 
   ASSERT_NO_FATAL_FAILURE(popup_window.DestroyOwnedWindow());
 }
 
 // The following code verifies we can correctly destroy a Widget from a mouse
 // enter/exit. We could test move/drag/enter/exit but in general we don't run
-// nested message loops from such events, nor has the code ever really dealt
+// nested run loops from such events, nor has the code ever really dealt
 // with this situation.
 
 // Generates two moves (first generates enter, second real move), a press, drag
 // and release stopping at |last_event_type|.
 void GenerateMouseEvents(Widget* widget, ui::EventType last_event_type) {
   const gfx::Rect screen_bounds(widget->GetWindowBoundsInScreen());
   ui::MouseEvent move_event(ui::ET_MOUSE_MOVED, screen_bounds.CenterPoint(),
                             screen_bounds.CenterPoint(), ui::EventTimeForNow(),
                             0, 0);
   ui::EventSink* sink = WidgetTest::GetEventSink(widget);
@@ skipping 201 matching lines @@
   target->HandleKeyboardMessage(WM_CHAR, 0, 0, &handled);
   target->HandleKeyboardMessage(WM_SYSCHAR, 0, 0, &handled);
   target->HandleKeyboardMessage(WM_SYSDEADCHAR, 0, 0, &handled);
   widget.CloseNow();
 }
 
 #endif  // defined(OS_WIN)
 
 }  // namespace test
 }  // namespace views