Allow immutable textures into mailboxes

gpu/command_buffer/service/texture_definition.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/texture_definition.h"
 
 namespace gpu {
 namespace gles2 {
 
 TextureDefinition::LevelInfo::LevelInfo(GLenum target,
@@ skipping 11 matching lines @@
       height(height),
       depth(depth),
       border(border),
       format(format),
       type(type),
       cleared(cleared) {
 }
 
 TextureDefinition::TextureDefinition(GLenum target,
                                      GLuint service_id,
+                                     bool immutable,
                                      const LevelInfos& level_infos)
     : target_(target),
       service_id_(service_id),
+      immutable_(immutable),
       level_infos_(level_infos) {
 }
 
 TextureDefinition::~TextureDefinition() {
   DCHECK_EQ(0U, service_id_) << "TextureDefinition leaked texture.";
 }
 
 GLuint TextureDefinition::ReleaseServiceId() {
   GLuint service_id = service_id_;
   service_id_ = 0;
   return service_id;
 }
 
 }  // namespace gles2
 }  // namespace gpu