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

content/renderer/pepper/ppb_flash_message_loop_impl.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/renderer/pepper/ppb_flash_message_loop_impl.h"
 
 #include "base/callback.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 66 matching lines @@
     const RunFromHostProxyCallback& callback) {
   if (state_->run_called()) {
     if (!callback.is_null())
       callback.Run(PP_ERROR_FAILED);
     return PP_ERROR_FAILED;
   }
   state_->set_run_called();
   state_->set_run_callback(callback);
 
   // It is possible that the PPB_Flash_MessageLoop_Impl object has been
-  // destroyed when the nested message loop exits.
+  // destroyed when the nested run loop exits.
   scoped_refptr<State> state_protector(state_);
   {
     base::MessageLoop::ScopedNestableTaskAllower allow(
         base::MessageLoop::current());
     blink::WebView::WillEnterModalLoop();
 
     base::RunLoop().Run();
 
     blink::WebView::DidExitModalLoop();
   }
   // Don't access data members of the class below.
 
   return state_protector->result();
 }
 
 void PPB_Flash_MessageLoop_Impl::InternalQuit(int32_t result) {
   if (!state_->run_called() || state_->quit_called())
     return;
   state_->set_quit_called();
   state_->set_result(result);
 
   base::MessageLoop::current()->QuitNow();
 
   if (!state_->run_callback().is_null())
     state_->run_callback().Run(result);
 }
 
 }  // namespace content