Revert 171569 as it broke some browser_tests on win_aura.

gpu/command_buffer/service/texture_definition.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_
 #define GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "gpu/command_buffer/service/gl_utils.h"
 #include "gpu/gpu_export.h"
 
 namespace gpu {
 namespace gles2 {
 
 // A saved definition of a texture that still exists in the underlying
 // GLShareGroup and can be used to redefine a client visible texture in any
 // context using the same GLShareGroup with the corresponding service ID.
 class GPU_EXPORT TextureDefinition {
  public:
-  struct GPU_EXPORT LevelInfo {
+  struct LevelInfo {
     LevelInfo(GLenum target,
               GLenum internal_format,
               GLsizei width,
               GLsizei height,
               GLsizei depth,
               GLint border,
               GLenum format,
               GLenum type,
               bool cleared);
-    LevelInfo();
-
     GLenum target;
     GLenum internal_format;
     GLsizei width;
     GLsizei height;
     GLsizei depth;
     GLint border;
     GLenum format;
     GLenum type;
     bool cleared;
   };
@@ skipping 41 matching lines @@
   bool immutable_;
   std::vector<std::vector<LevelInfo> > level_infos_;
 
   DISALLOW_COPY_AND_ASSIGN(TextureDefinition);
 };
 
 }  // namespage gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_