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

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc

 // Copyright (c) 2016 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h"
 
 #include "base/strings/string_number_conversions.h"
 
 namespace gpu {
 namespace gles2 {
@@ skipping 2672 matching lines @@
 error::Error GLES2DecoderPassthroughImpl::DoPostSubBufferCHROMIUM(
     GLint x,
     GLint y,
     GLint width,
     GLint height) {
   return error::kNoError;
 }
 
 error::Error GLES2DecoderPassthroughImpl::DoCopyTextureCHROMIUM(
     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) {
   glCopyTextureCHROMIUM(GetTextureServiceID(source_id, resources_, false),
                         GetTextureServiceID(dest_id, resources_, false),
                         internalformat, dest_type, unpack_flip_y,
                         unpack_premultiply_alpha, unpack_unmultiply_alpha);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderPassthroughImpl::DoCopySubTextureCHROMIUM(
     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) {
   glCopySubTextureCHROMIUM(GetTextureServiceID(source_id, resources_, false),
@@ skipping 594 matching lines @@
     GLuint texture,
     GLboolean promotion_hint,
     GLint display_x,
     GLint display_y) {
   NOTIMPLEMENTED();
   return error::kNoError;
 }
 
 }  // namespace gles2
 }  // namespace gpu