mac: Remove GPU bug workarounds for OS X versions before 10.9

gpu/command_buffer/service/context_group.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/context_group.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 272 matching lines @@
   }
 
   if (feature_info_->workarounds().max_texture_size) {
     max_texture_size = std::min(
         max_texture_size,
         feature_info_->workarounds().max_texture_size);
     max_rectangle_texture_size = std::min(
         max_rectangle_texture_size,
         feature_info_->workarounds().max_texture_size);
   }
-  if (feature_info_->workarounds().max_cube_map_texture_size) {
-    max_cube_map_texture_size = std::min(
-        max_cube_map_texture_size,
-        feature_info_->workarounds().max_cube_map_texture_size);
-  }
 
   texture_manager_.reset(new TextureManager(memory_tracker_.get(),
                                             feature_info_.get(),
                                             max_texture_size,
                                             max_cube_map_texture_size,
                                             max_rectangle_texture_size,
                                             max_3d_texture_size,
                                             max_array_texture_layers,
                                             bind_generates_resource_));
   texture_manager_->set_framebuffer_manager(framebuffer_manager_.get());
@@ skipping 289 matching lines @@
     GLuint client_id, GLuint* service_id) const {
   Buffer* buffer = buffer_manager_->GetBuffer(client_id);
   if (!buffer)
     return false;
   *service_id = buffer->service_id();
   return true;
 }
 
 }  // namespace gles2
 }  // namespace gpu