gpu: Make pack/unpack alignment part of autogenerated state

gpu/command_buffer/service/context_state.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.
 
 // This file contains the ContextState class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_
 
 #include <vector>
@@ skipping 106 matching lines @@
   bool GetStateAsGLfloat(
       GLenum pname, GLfloat* params, GLsizei* num_written) const;
   bool GetEnabled(GLenum cap) const;
 
   ErrorState* GetErrorState();
 
   #include "gpu/command_buffer/service/context_state_autogen.h"
 
   EnableFlags enable_flags;
 
-  // pack alignment as last set by glPixelStorei
-  GLint pack_alignment;
-
-  // unpack alignment as last set by glPixelStorei
-  GLint unpack_alignment;
-
   // Current active texture by 0 - n index.
   // In other words, if we call glActiveTexture(GL_TEXTURE2) this value would
   // be 2.
   GLuint active_texture_unit;
 
   // The currently bound array buffer. If this is 0 it is illegal to call
   // glVertexAttribPointer.
   scoped_refptr<Buffer> bound_array_buffer;
 
   // Which textures are bound to texture units through glActiveTexture.
@@ skipping 24 matching lines @@
 
  private:
   scoped_ptr<ErrorState> error_state_;
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_CONTEXT_STATE_H_