Update from chromium https://crrev.com/301725/

gpu/command_buffer/service/shader_translator_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 <GLES2/gl2.h>
 
 #include "gpu/command_buffer/service/shader_translator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gpu {
 namespace gles2 {
 
 class ShaderTranslatorTest : public testing::Test {
  public:
   ShaderTranslatorTest() {
   }
 
-  virtual ~ShaderTranslatorTest() {
-  }
+  ~ShaderTranslatorTest() override {}
 
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     ShBuiltInResources resources;
     ShInitBuiltInResources(&resources);
     resources.MaxExpressionComplexity = 32;
     resources.MaxCallStackDepth = 32;
 
     vertex_translator_ = new ShaderTranslator();
     fragment_translator_ = new ShaderTranslator();
 
     ASSERT_TRUE(vertex_translator_->Init(
         GL_VERTEX_SHADER, SH_GLES2_SPEC, &resources,
         ShaderTranslatorInterface::kGlsl,
         SH_EMULATE_BUILT_IN_FUNCTIONS));
     ASSERT_TRUE(fragment_translator_->Init(
         GL_FRAGMENT_SHADER, SH_GLES2_SPEC, &resources,
         ShaderTranslatorInterface::kGlsl,
         static_cast<ShCompileOptions>(0)));
   }
-  virtual void TearDown() {
+  void TearDown() override {
     vertex_translator_ = NULL;
     fragment_translator_ = NULL;
   }
 
   scoped_refptr<ShaderTranslator> vertex_translator_;
   scoped_refptr<ShaderTranslator> fragment_translator_;
 };
 
 TEST_F(ShaderTranslatorTest, ValidVertexShader) {
   const char* shader =
@@ skipping 283 matching lines @@
 
   EXPECT_EQ(options_1, options_2);
   EXPECT_NE(options_1, options_3);
   EXPECT_NE(options_1, options_4);
   EXPECT_NE(options_3, options_4);
 }
 
 }  // namespace gles2
 }  // namespace gpu