Mojo: More virtual/override style fixes in mojo/.

mojo/public/python/src/python_system_helper.cc

 // Copyright 2014 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 "mojo/public/python/src/python_system_helper.h"
 
 #include "Python.h"
 
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/environment/logging.h"
@@ skipping 39 matching lines @@
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(ScopedPyRef);
 };
 
 class PythonClosure : public mojo::Closure::Runnable {
  public:
   PythonClosure(PyObject* callable) : callable_(callable, kAcquire) {
     MOJO_DCHECK(callable);
   }
 
-  virtual void Run() const override {
+  void Run() const override {
     ScopedGIL acquire_gil;
     ScopedPyRef empty_tuple(PyTuple_New(0));
     if (!empty_tuple) {
       mojo::RunLoop::current()->Quit();
       return;
     }
 
     ScopedPyRef result(PyObject_CallObject(callable_, empty_tuple));
     if (!result) {
       mojo::RunLoop::current()->Quit();
@@ skipping 23 matching lines @@
     : public mojo::Callback<void(MojoResult)>::Runnable {
  public:
   AsyncWaiterRunnable(PyObject* callable, CallbackMap* callbacks)
       : wait_id_(0), callable_(callable, kAcquire), callbacks_(callbacks) {
     MOJO_DCHECK(callable);
     MOJO_DCHECK(callbacks_);
   }
 
   void set_wait_id(int wait_id) { wait_id_ = wait_id; }
 
-  virtual void Run(MojoResult mojo_result) const override {
+  void Run(MojoResult mojo_result) const override {
     MOJO_DCHECK(wait_id_);
 
     // Remove to reference to this object from PythonAsyncWaiter and ensure this
     // object will be destroyed when this method exits.
     MOJO_DCHECK(callbacks_->find(wait_id_) != callbacks_->end());
     internal::SharedPtr<mojo::Callback<void(MojoResult)>> self =
         (*callbacks_)[wait_id_];
     callbacks_->erase(wait_id_);
 
     ScopedGIL acquire_gil;
@@ skipping 55 matching lines @@
 
 void PythonAsyncWaiter::CancelWait(MojoAsyncWaitID wait_id) {
   if (callbacks_.find(wait_id) != callbacks_.end()) {
     async_waiter_->CancelWait(wait_id);
     callbacks_.erase(wait_id);
   }
 }
 
 }  // namespace python
 }  // namespace mojo