Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/tests/gl_program_unittest.cc

Index: gpu/command_buffer/tests/gl_program_unittest.cc
diff --git a/gpu/command_buffer/tests/gl_program_unittest.cc b/gpu/command_buffer/tests/gl_program_unittest.cc
index b99aa58388000a0f82fd0ad51ca32e5b68329f6e..aec95b2f5e4ee92c98b11ebff02a441724cf3166 100644
--- a/gpu/command_buffer/tests/gl_program_unittest.cc
+++ b/gpu/command_buffer/tests/gl_program_unittest.cc
@@ -16,13 +16,9 @@ namespace gpu {
 
 class GLProgramTest : public testing::Test {
  protected:
-  virtual void SetUp() {
-    gl_.Initialize(GLManager::Options());
-  }
+  void SetUp() override { gl_.Initialize(GLManager::Options()); }
 
-  virtual void TearDown() {
-    gl_.Destroy();
-  }
+  void TearDown() override { gl_.Destroy(); }
 
   GLManager gl_;
 };