Standardize usage of virtual/override/final specifiers.

gpu/command_buffer/client/program_info_manager_unittest.cc

Index: gpu/command_buffer/client/program_info_manager_unittest.cc
diff --git a/gpu/command_buffer/client/program_info_manager_unittest.cc b/gpu/command_buffer/client/program_info_manager_unittest.cc
index e5002fd30a94de46d5e233028e9918204703fba1..ba62703ef9882fe8d1964d9b8147685622f0b0f1 100644
--- a/gpu/command_buffer/client/program_info_manager_unittest.cc
+++ b/gpu/command_buffer/client/program_info_manager_unittest.cc
@@ -14,11 +14,9 @@ namespace gles2 {
 
 class ProgramInfoManagerTest : public testing::Test {
  protected:
-  virtual void SetUp() {
-  }
+  void SetUp() override {}
 
-  virtual void TearDown() {
-  }
+  void TearDown() override {}
 
   scoped_ptr<ProgramInfoManager> program_info_manager_;
 };