Revert of Make GL bindings conditional

ui/gl/gl_version_info.h

 // Copyright 2014 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 UI_GL_GL_VERSION_INFO_H_
 #define UI_GL_GL_VERSION_INFO_H_
 
 #include <string>
 #include "base/basictypes.h"
 #include "ui/gl/gl_export.h"
 
 namespace gfx {
 
 struct GL_EXPORT GLVersionInfo {
   GLVersionInfo(const char* version_str, const char* renderer_str);
 
-  bool IsAtLeastGL(unsigned major, unsigned minor) const {
-    return !is_es && (major_version > major ||
-                      (major_version == major && minor_version >= minor));
-  }
+  // New flags, such as is_gl4_4 could be introduced as needed.
+  // For now, this level of granularity is enough.
+  bool is_es;
+  bool is_es1;
+  bool is_es2;
+  bool is_es3;
 
-  bool IsAtLeastGLES(unsigned major, unsigned minor) const {
-    return is_es && (major_version > major ||
-                     (major_version == major && minor_version >= minor));
-  }
+  bool is_gl1;
+  bool is_gl2;
+  bool is_gl3;
+  bool is_gl4;
 
-  bool is_es;
   bool is_angle;
-  unsigned major_version;
-  unsigned minor_version;
-  bool is_es3;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GLVersionInfo);
 };
 
 }  // namespace gfx
 
 #endif // UI_GL_GL_VERSION_INFO_H_