gpu: introduce DISABLE_TEXTURE_STORAGE workaround for mesa

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 28 matching lines @@
   GPU_OP(DISABLE_GL_RGB_FORMAT,                              \
          disable_gl_rgb_format)                              \
   GPU_OP(DISABLE_MULTIMONITOR_MULTISAMPLING,                 \
          disable_multimonitor_multisampling)                 \
   GPU_OP(DISABLE_MULTISAMPLED_RENDER_TO_TEXTURE,             \
          disable_multisampled_render_to_texture)             \
   GPU_OP(DISABLE_POST_SUB_BUFFERS_FOR_ONSCREEN_SURFACES,     \
          disable_post_sub_buffers_for_onscreen_surfaces)     \
   GPU_OP(DISABLE_PROGRAM_CACHE,                              \
          disable_program_cache)                              \
+  GPU_OP(DISABLE_TEXTURE_STORAGE,                            \
+         disable_texture_storage)                            \

[piman, 2015/08/22 00:11:41]

You added this workaround type, but you're not using it anywhere... So I don't
think this does anything.

[dshwang, 2015/08/26 15:20:14]

you're right. the patch set missed feature_info.cc change
I update it in new patch set.

   GPU_OP(DISABLE_TIMESTAMP_QUERIES,                          \
          disable_timestamp_queries)                          \
   GPU_OP(ETC1_POWER_OF_TWO_ONLY,                             \
          etc1_power_of_two_only)                             \
   GPU_OP(EXIT_ON_CONTEXT_LOST,                               \
          exit_on_context_lost)                               \
   GPU_OP(FORCE_DISCRETE_GPU,                                 \
          force_discrete_gpu)                                 \
   GPU_OP(FORCE_GL_FINISH_AFTER_COMPOSITING,                  \
          force_gl_finish_after_compositing)                  \
@@ skipping 83 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_