Refactor FeatureInfo so you can't request features.

gpu/command_buffer/service/feature_info.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_FEATURE_INFO_H_
 #define GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_
 
 #include <string>
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
@@ skipping 12 matching lines @@
 
   struct FeatureFlags {
     FeatureFlags();
 
     bool chromium_framebuffer_multisample;
     bool oes_standard_derivatives;
     bool oes_egl_image_external;
     bool npot_ok;
     bool enable_texture_float_linear;
     bool enable_texture_half_float_linear;
-    bool chromium_webglsl;
     bool chromium_stream_texture;
     bool angle_translated_shader_source;
     bool angle_pack_reverse_row_order;
     bool arb_texture_rectangle;
     bool angle_instanced_arrays;
     bool occlusion_query_boolean;
     bool use_arb_occlusion_query2_for_occlusion_query_boolean;
     bool use_arb_occlusion_query_for_occlusion_query_boolean;
     bool native_vertex_array_object;
     bool disable_workarounds;
@@ skipping 17 matching lines @@
   };
 
   FeatureInfo();
 
   // If allowed features = NULL or "*", all features are allowed. Otherwise
   // only features that match the strings in allowed_features are allowed.
   bool Initialize(const char* allowed_features);
   bool Initialize(const DisallowedFeatures& disallowed_features,
                   const char* allowed_features);
 
-  // Turns on certain features if they can be turned on. NULL turns on
-  // all available features.
-  void AddFeatures(const char* desired_features);
+  // Turns on certain features if they can be turned on.
+  void AddFeatures();
 
   const Validators* validators() const {
     return &validators_;
   }
 
   const ValueValidator<GLenum>& GetTextureFormatValidator(GLenum format) {
     return texture_format_validators_[format];
   }
 
   const std::string& extensions() const {
@@ skipping 31 matching lines @@
   // Flags for Workarounds.
   Workarounds workarounds_;
 
   DISALLOW_COPY_AND_ASSIGN(FeatureInfo);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_