Delete copy_texture_to_parent_texture from GPU command buffer code.

gpu/command_buffer/service/gles2_cmd_decoder_autogen.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
===================================================================
--- gpu/command_buffer/service/gles2_cmd_decoder_autogen.h	(revision 95857)
+++ gpu/command_buffer/service/gles2_cmd_decoder_autogen.h	(working copy)
@@ -2568,15 +2568,6 @@
   return error::kNoError;
 }
 
-error::Error GLES2DecoderImpl::HandleCopyTextureToParentTextureCHROMIUM(
-    uint32 immediate_data_size,
-    const gles2::CopyTextureToParentTextureCHROMIUM& c) {
-  GLuint client_child_id = c.client_child_id;
-  GLuint client_parent_id = c.client_parent_id;
-  DoCopyTextureToParentTextureCHROMIUM(client_child_id, client_parent_id);
-  return error::kNoError;
-}
-
 error::Error GLES2DecoderImpl::HandleResizeCHROMIUM(
     uint32 immediate_data_size, const gles2::ResizeCHROMIUM& c) {
   GLuint width = static_cast<GLuint>(c.width);