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

ppapi/proxy/flash_menu_resource.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 "ppapi/proxy/flash_menu_resource.h"
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_flash_menu.h"
 
@@ skipping 31 matching lines @@
   selected_id_dest_ = selected_id;
   callback_ = callback;
 
   // This must be a sync message even though we don't care about the result.
   // The actual reply will be sent asynchronously in the future. This sync
   // request is due to the following deadlock:
   //
   //  1. Flash sends a show request to the renderer.
   //  2. The show handler in the renderer (in the case of full screen) requests
   //     the window rect which is a sync message to the browser. This causes
-  //     a nested message loop to be spun up in the renderer.
+  //     a nested run loop to be spun up in the renderer.
   //  3. Flash expects context menus to be synchronous so it starts a nested
-  //     message loop. This creates a second nested message loop in both the
+  //     message loop. This creates a second nested run loop in both the
   //     plugin and renderer process.
   //  4. The browser sends the window rect reply to unblock the renderer, but
-  //     it's in the second nested message loop and the reply will *not*
+  //     it's in the second nested run loop and the reply will *not*
   //     unblock this loop.
   //  5. The second loop won't exit until the message loop is complete, but
   //     that can't start until the first one exits.
   //
   // Having this message sync forces the sync request from the renderer to the
   // browser for the window rect will complete before Flash can run a nested
   // message loop to wait for the result of the menu.
   SyncCall<IPC::Message>(RENDERER, PpapiHostMsg_FlashMenu_Show(*location));
   return PP_OK_COMPLETIONPENDING;
 }
@@ skipping 20 matching lines @@
   if (!TrackedCallback::IsPending(callback_))
     return;
 
   *selected_id_dest_ = selected_id;
   selected_id_dest_ = NULL;
   callback_->Run(params.result());
 }
 
 }  // namespace proxy
 }  // namespace ppapi