gpu: Optimize and cleanup code used for CHROMIUM_copy_texture.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 10071 matching lines @@
   if (source_texture->target() == GL_TEXTURE_EXTERNAL_OES) {
     // TODO(hkuang): get the StreamTexture transform matrix in GPU process
     // instead of using default matrix crbug.com/226218.
     const static GLfloat default_matrix[16] = {1.0f, 0.0f, 0.0f, 0.0f,
                                                0.0f, 1.0f, 0.0f, 0.0f,
                                                0.0f, 0.0f, 1.0f, 0.0f,
                                                0.0f, 0.0f, 0.0f, 1.0f};
     copy_texture_CHROMIUM_->DoCopyTextureWithTransform(
         this,
         source_texture->target(),
-        dest_texture->target(),
         source_texture->service_id(),
         dest_texture->service_id(), level,
+        internal_format,
         source_width, source_height,
         unpack_flip_y_,
         unpack_premultiply_alpha_,
         unpack_unpremultiply_alpha_,
         default_matrix);
   } else {
     copy_texture_CHROMIUM_->DoCopyTexture(
         this,
         source_texture->target(),
-        dest_texture->target(),
         source_texture->service_id(),
         dest_texture->service_id(), level,
+        internal_format,
         source_width, source_height,
         unpack_flip_y_,
         unpack_premultiply_alpha_,
         unpack_unpremultiply_alpha_);
   }
 
   DoDidUseTexImageIfNeeded(source_texture, source_texture->target());
 }
 
 static GLenum ExtractTypeFromStorageFormat(GLenum internalformat) {
@@ skipping 799 matching lines @@
   }
 }
 
 // Include the auto-generated part of this file. 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/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu