Modify Copy{Sub}TextureCHROMIUM entry point to add level argument

gpu/command_buffer/client/gles2_implementation_autogen.h

 // Copyright 2014 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 924 matching lines @@
                                     GLsizei bufsize,
                                     GLsizei* length,
                                     char* source) override;
 
 void PostSubBufferCHROMIUM(GLint x,
                            GLint y,
                            GLint width,
                            GLint height) override;
 
 void CopyTextureCHROMIUM(GLenum source_id,
+                         GLint source_level,
                          GLenum dest_id,
+                         GLint dest_level,
                          GLint internalformat,
                          GLenum dest_type,
                          GLboolean unpack_flip_y,
                          GLboolean unpack_premultiply_alpha,
                          GLboolean unpack_unmultiply_alpha) override;
 
 void CopySubTextureCHROMIUM(GLenum source_id,
+                            GLint source_level,
                             GLenum dest_id,
+                            GLint dest_level,
                             GLint xoffset,
                             GLint yoffset,
                             GLint x,
                             GLint y,
                             GLsizei width,
                             GLsizei height,
                             GLboolean unpack_flip_y,
                             GLboolean unpack_premultiply_alpha,
                             GLboolean unpack_unmultiply_alpha) override;
 
@@ skipping 239 matching lines @@
                                   GLboolean promotion_hint,
                                   GLint display_x,
                                   GLint display_y) override;
 
 void SwapBuffersWithDamageCHROMIUM(GLint x,
                                    GLint y,
                                    GLint width,
                                    GLint height) override;
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_