Remove the "target" argument from CopyTextureChromium.

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 909 matching lines @@
                            GLint y,
                            GLint width,
                            GLint height) override;
 
 void TexImageIOSurface2DCHROMIUM(GLenum target,
                                  GLsizei width,
                                  GLsizei height,
                                  GLuint ioSurfaceId,
                                  GLuint plane) override;
 
-void CopyTextureCHROMIUM(GLenum target,
-                         GLenum source_id,
+void CopyTextureCHROMIUM(GLenum source_id,
                          GLenum dest_id,
                          GLint internalformat,
                          GLenum dest_type,
                          GLboolean unpack_flip_y,
                          GLboolean unpack_premultiply_alpha,
                          GLboolean unpack_unmultiply_alpha) override;
 
-void CopySubTextureCHROMIUM(GLenum target,
-                            GLenum source_id,
+void CopySubTextureCHROMIUM(GLenum source_id,
                             GLenum dest_id,
                             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 246 matching lines @@
                                     GLuint index,
                                     const char* name) override;
 
 void BindFragDataLocationEXT(GLuint program,
                              GLuint colorNumber,
                              const char* name) override;
 
 GLint GetFragDataIndexEXT(GLuint program, const char* name) override;
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_