Add a mechanism for command buffer to conditionally allow ES3 enums.

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 <set>
 #include <string>
 #include "base/containers/hash_tables.h"
@@ skipping 112 matching lines @@
 
   const Workarounds& workarounds() const {
     return workarounds_;
   }
 
   const gfx::GLVersionInfo& gl_version_info() const {
     DCHECK(gl_version_info_.get());
     return *(gl_version_info_.get());
   }
 
+  bool IsES3Capable() const;
+  void EnableES3Validators();
+
  private:
   friend class base::RefCounted<FeatureInfo>;
   friend class BufferManagerClientSideArraysTest;
 
   typedef base::hash_map<GLenum, ValueValidator<GLenum> > ValidatorMap;
   ValidatorMap texture_format_validators_;
 
   ~FeatureInfo();
 
   void AddExtensionString(const char* s);
@@ skipping 15 matching lines @@
 
   scoped_ptr<gfx::GLVersionInfo> gl_version_info_;
 
   DISALLOW_COPY_AND_ASSIGN(FeatureInfo);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_FEATURE_INFO_H_