Standardize usage of virtual/override/final in gpu/

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_UNITTEST_BASE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_UNITTEST_BASE_H_
 
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/buffer_manager.h"
@@ skipping 536 matching lines @@
     bool cached_stencil_test;
   };
 
   EnableFlags enable_flags_;
 
  private:
   class MockCommandBufferEngine : public CommandBufferEngine {
    public:
     MockCommandBufferEngine();
 
-    virtual ~MockCommandBufferEngine();
+    ~MockCommandBufferEngine() override;
 
-    virtual scoped_refptr<gpu::Buffer> GetSharedMemoryBuffer(int32 shm_id)
-        override;
+    scoped_refptr<gpu::Buffer> GetSharedMemoryBuffer(int32 shm_id) override;
 
     void ClearSharedMemory() {
       memset(valid_buffer_->memory(), kInitialMemoryValue, kSharedBufferSize);
     }
 
-    virtual void set_token(int32 token) override;
+    void set_token(int32 token) override;
 
-    virtual bool SetGetBuffer(int32 /* transfer_buffer_id */) override;
+    bool SetGetBuffer(int32 /* transfer_buffer_id */) override;
 
     // Overridden from CommandBufferEngine.
-    virtual bool SetGetOffset(int32 offset) override;
+    bool SetGetOffset(int32 offset) override;
 
     // Overridden from CommandBufferEngine.
-    virtual int32 GetGetOffset() override;
+    int32 GetGetOffset() override;
 
    private:
     scoped_refptr<gpu::Buffer> valid_buffer_;
     scoped_refptr<gpu::Buffer> invalid_buffer_;
   };
 
   // MockGLStates is used to track GL states and emulate driver
   // behaviors on top of MockGLInterface.
   class MockGLStates {
    public:
@@ skipping 49 matching lines @@
 };
 
 // SpecializedSetup specializations that are needed in multiple unittest files.
 template <>
 void GLES2DecoderTestBase::SpecializedSetup<cmds::LinkProgram, 0>(bool valid);
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_UNITTEST_BASE_H_