Update {virtual,override} to follow C++11 style in printing.

printing/printing_context_win_unittest.cc

 // Copyright (c) 2011 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 "printing/printing_context_win.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "printing/backend/printing_info_win.h"
 #include "printing/backend/win_helper.h"
 #include "printing/print_settings.h"
 #include "printing/printing_context_system_dialog_win.h"
 #include "printing/printing_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace printing {
 
 // This test is automatically disabled if no printer is available.
 class PrintingContextTest : public PrintingTest<testing::Test>,
                             public PrintingContext::Delegate {
  public:
   void PrintSettingsCallback(PrintingContext::Result result) {
     result_ = result;
   }
 
   // PrintingContext::Delegate methods.
-  virtual gfx::NativeView GetParentView() override { return NULL; }
-  virtual std::string GetAppLocale() override { return std::string(); }
+  gfx::NativeView GetParentView() override { return NULL; }
+  std::string GetAppLocale() override { return std::string(); }
 
  protected:
   PrintingContext::Result result() const { return result_; }
 
  private:
   PrintingContext::Result result_;
 };
 
 class MockPrintingContextWin : public PrintingContextSytemDialogWin {
  public:
@@ skipping 141 matching lines @@
   EXPECT_EQ(PrintingContext::OK, context->InitWithSettings(settings));
 
   // The print may lie to use and may not support world transformation.
   // Verify right now.
   XFORM random_matrix = { 1, 0.1f, 0, 1.5f, 0, 1 };
   EXPECT_TRUE(SetWorldTransform(context->context(), &random_matrix));
   EXPECT_TRUE(ModifyWorldTransform(context->context(), NULL, MWT_IDENTITY));
 }
 
 }  // namespace printing