Standardize usage of virtual/override/final in gpu/

gpu/command_buffer/client/gles2_cmd_helper.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_CLIENT_GLES2_CMD_HELPER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_CMD_HELPER_H_
 
 #include "gpu/command_buffer/client/cmd_buffer_helper.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
 namespace gles2 {
 
 // A class that helps write GL command buffers.
 class GPU_EXPORT GLES2CmdHelper : public CommandBufferHelper {
  public:
   explicit GLES2CmdHelper(CommandBuffer* command_buffer);
-  virtual ~GLES2CmdHelper();
+  ~GLES2CmdHelper() override;
 
   // Include the auto-generated part of this class. We split this because it
   // means we can easily edit the non-auto generated parts right here in this
   // file instead of having to edit some template or the code generator.
   #include "gpu/command_buffer/client/gles2_cmd_helper_autogen.h"
 
   // Helpers that could not be auto-generated.
   // TODO(gman): Auto generate these.
   void CreateAndConsumeTextureCHROMIUMImmediate(GLenum target,
                                                 uint32_t client_id,
@@ skipping 10 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GLES2CmdHelper);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_CMD_HELPER_H_