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

printing/emf_win_unittest.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 "printing/emf_win.h"
 
 // For quick access.
 #include <wingdi.h>
 #include <winspool.h>
 
@@ skipping 23 matching lines @@
   static bool IsTestCaseDisabled() {
     // It is assumed this printer is a HP Color LaserJet 4550 PCL or 4700.
     HDC hdc = CreateDC(L"WINSPOOL", L"UnitTest Printer", NULL, NULL);
     if (!hdc)
       return true;
     DeleteDC(hdc);
     return false;
   }
 
   // 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(); }
 };
 
 const uint32 EMF_HEADER_SIZE = 128;
 
 }  // namespace
 
 TEST(EmfTest, DC) {
   // Simplest use case.
   uint32 size;
   std::vector<char> data;
@@ skipping 169 matching lines @@
   EXPECT_EQ(emf.GetPageBounds(1), raster->GetPageBounds(1));
 
   raster = emf.RasterizeMetafile(16 * 1024 * 1024);
   // Expected size about 64MB.
   EXPECT_LE(abs(int(raster->GetDataSize()) - 64 * 1024 * 1024), 1024 * 1024);
   // Bounds should still be the same.
   EXPECT_EQ(emf.GetPageBounds(1), raster->GetPageBounds(1));
 }
 
 }  // namespace printing