Add a base mipmap level walkaround for Intel MacOSX

gpu/config/gpu_driver_bug_workaround_type.h

 // Copyright (c) 2013 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_CONFIG_GPU_DRIVER_BUG_WORKAROUND_TYPE_H_
 #define GPU_CONFIG_GPU_DRIVER_BUG_WORKAROUND_TYPE_H_
 
 #include <string>
 
 #include "gpu/gpu_export.h"
@@ skipping 105 matching lines @@
   GPU_OP(NEEDS_OFFSCREEN_BUFFER_WORKAROUND,                  \
          needs_offscreen_buffer_workaround)                  \
   GPU_OP(PACK_PARAMETERS_WORKAROUND_WITH_PACK_BUFFER,        \
          pack_parameters_workaround_with_pack_buffer)        \
   GPU_OP(REBIND_TRANSFORM_FEEDBACK_BEFORE_RESUME,            \
          rebind_transform_feedback_before_resume)            \
   GPU_OP(REGENERATE_STRUCT_NAMES,                            \
          regenerate_struct_names)                            \
   GPU_OP(REMOVE_POW_WITH_CONSTANT_EXPONENT,                  \
          remove_pow_with_constant_exponent)                  \
+  GPU_OP(RESET_BASE_MIPMAP_LEVEL_BEFORE_TEXSTORAGE,          \
+         reset_base_mipmap_level_before_texstorage)          \
   GPU_OP(RESTORE_SCISSOR_ON_FBO_CHANGE,                      \
          restore_scissor_on_fbo_change)                      \
   GPU_OP(REVERSE_POINT_SPRITE_COORD_ORIGIN,                  \
          reverse_point_sprite_coord_origin)                  \
   GPU_OP(SCALARIZE_VEC_AND_MAT_CONSTRUCTOR_ARGS,             \
          scalarize_vec_and_mat_constructor_args)             \
   GPU_OP(SET_TEXTURE_FILTER_BEFORE_GENERATING_MIPMAP,        \
          set_texture_filter_before_generating_mipmap)        \
   GPU_OP(SET_ZERO_LEVEL_BEFORE_GENERATING_MIPMAP,            \
          set_zero_level_before_generating_mipmap)            \
@@ skipping 46 matching lines @@
 #undef GPU_OP
   NUMBER_OF_GPU_DRIVER_BUG_WORKAROUND_TYPES
 };
 
 GPU_EXPORT std::string GpuDriverBugWorkaroundTypeToString(
     GpuDriverBugWorkaroundType type);
 
 }  // namespace gpu
 
 #endif  // GPU_CONFIG_GPU_DRIVER_BUG_WORKAROUND_TYPE_H_