Delete copy_texture_to_parent_texture from GPU command buffer code.

gpu/command_buffer/client/gles2_implementation.cc

 // Copyright (c) 2011 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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "../client/gles2_implementation.h"
 
 #include <GLES2/gl2ext.h>
 #include <GLES2/gles2_command_buffer.h>
@@ skipping 829 matching lines @@
   swap_buffers_tokens_.push(helper_->InsertToken());
   helper_->SwapBuffers();
   helper_->CommandBufferHelper::Flush();
   // Wait if we added too many swap buffers.
   if (swap_buffers_tokens_.size() > kMaxSwapBuffers) {
     helper_->WaitForToken(swap_buffers_tokens_.front());
     swap_buffers_tokens_.pop();
   }
 }
 
-void GLES2Implementation::CopyTextureToParentTextureCHROMIUM(
-    GLuint client_child_id, GLuint client_parent_id) {
-  GPU_CLIENT_LOG("[" << this << "] glCopyTextureToParentTextureCHROMIUM("
-      << client_child_id << ", "
-      << client_parent_id << ")");
-  helper_->CopyTextureToParentTextureCHROMIUM(client_child_id,
-      client_parent_id);
-}
-
 void GLES2Implementation::GenSharedIdsCHROMIUM(
   GLuint namespace_id, GLuint id_offset, GLsizei n, GLuint* ids) {
   GPU_CLIENT_LOG("[" << this << "] glGenSharedIdsCHROMIUMTextures("
       << namespace_id << ", " << id_offset << ", " << n << ", " <<
       static_cast<void*>(ids) << ")");
   GPU_CLIENT_LOG_CODE_BLOCK({
     for (GLsizei i = 0; i < n; ++i) {
       GPU_CLIENT_LOG("  " << i << ": " << ids[i]);
     }
   });
@@ skipping 1562 matching lines @@
   if (static_cast<size_t>(bufsize) < result.size()) {
     SetGLError(GL_INVALID_OPERATION,
                "glProgramInfoCHROMIUM: bufsize is too small for result.");
     return;
   }
   memcpy(info, &result[0], result.size());
 }
 
 }  // namespace gles2
 }  // namespace gpu