Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_texture_storage_unittest.cc

Index: gpu/command_buffer/tests/gl_texture_storage_unittest.cc
diff --git a/gpu/command_buffer/tests/gl_texture_storage_unittest.cc b/gpu/command_buffer/tests/gl_texture_storage_unittest.cc
index b28baf0c054a0569327b51f2fe184e697e36aaa8..1f14e2853d2bbaec1d659f4d3e67ad778f855475 100644
--- a/gpu/command_buffer/tests/gl_texture_storage_unittest.cc
+++ b/gpu/command_buffer/tests/gl_texture_storage_unittest.cc
@@ -15,7 +15,7 @@ namespace gpu {
 class TextureStorageTest : public testing::Test {
  protected:
   static const GLsizei kResolution = 64;
-  virtual void SetUp() {
+  void SetUp() override {
     GLManager::Options options;
     options.size = gfx::Size(kResolution, kResolution);
     gl_.Initialize(options);
@@ -37,9 +37,7 @@ class TextureStorageTest : public testing::Test {
         extensions), "GL_EXT_texture_storage");
   }
 
-  virtual void TearDown() {
-    gl_.Destroy();
-  }
+  void TearDown() override { gl_.Destroy(); }
 
   GLManager gl_;
   GLuint tex_;