GLVersionInfo: alse detect es3 support with extensions

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 <set>
 #include <string>
 #include "base/macros.h"
@@ skipping 21 matching lines @@
 
   bool IsAtLeastGLES(unsigned major, unsigned minor) const {
     return is_es && (major_version > major ||
                      (major_version == major && minor_version >= minor));
   }
 
   bool BehavesLikeGLES() const {
     return is_es || is_desktop_core_profile;
   }
 
-  bool IsES3Capable() const {
-    if (IsAtLeastGLES(3, 0) || IsAtLeastGL(4, 2))
-      return true;
-#if defined(OS_MACOSX)
-    // TODO(zmo): For experimentation purpose on MacOSX with core profile,
-    // allow 3.2 or plus for now.
-    if (IsAtLeastGL(3, 2))
-      return true;
-#endif
-    return false;
-  }
-
   static void ParseVersionString(const char* version_str,
                                  unsigned* major_version,
                                  unsigned* minor_version,
                                  bool* is_es,
                                  bool* is_es2,
                                  bool* is_es3);
 
   bool is_es;
   bool is_angle;
   unsigned major_version;
   unsigned minor_version;
   bool is_es2;
   bool is_es3;
   bool is_desktop_core_profile;
+  bool is_es3_capable;
 
  private:
-  GLVersionInfo(const char* version_str, const char* renderer_str);
+  GLVersionInfo();
+  void Initialize(const char* version_str,
+                  const char* renderer_str,
+                  const std::set<std::string>& extensions);
+  bool IsES3Capable(const std::set<std::string>& extensions) const;
 
   DISALLOW_COPY_AND_ASSIGN(GLVersionInfo);
 };
 
 }  // namespace gl
 
 #endif // UI_GL_GL_VERSION_INFO_H_