Some more virtual/override updates.

mojo/public/cpp/bindings/tests/interface_ptr_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 "mojo/public/cpp/bindings/error_handler.h"
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/public/interfaces/bindings/tests/math_calculator.mojom.h"
 #include "mojo/public/interfaces/bindings/tests/sample_service.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 134 matching lines @@
   void GetPort(mojo::InterfaceRequest<sample::Port> port) override {}
 
  private:
   bool got_connection_;
   int call_depth_;
   int max_call_depth_;
 };
 
 class InterfacePtrTest : public testing::Test {
  public:
-  virtual ~InterfacePtrTest() { loop_.RunUntilIdle(); }
+  ~InterfacePtrTest() override { loop_.RunUntilIdle(); }
 
   void PumpMessages() { loop_.RunUntilIdle(); }
 
  private:
   Environment env_;
   RunLoop loop_;
 };
 
 TEST_F(InterfacePtrTest, EndToEnd) {
   math::CalculatorPtr calc;
@@ skipping 181 matching lines @@
                    sample::PortPtr());
 
   PumpMessages();
 
   EXPECT_EQ(2, impl->max_call_depth());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo