Took newly community approved WebGL extensions out of draft status

Source/core/html/canvas/WebGLRenderingContextBase.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 524 matching lines @@
     unsigned long m_onePlusMaxNonDefaultTextureUnit;
 
     OwnPtr<Extensions3DUtil> m_extensionsUtil;
 
     bool m_savingImage;
 
     enum ExtensionFlags {
         ApprovedExtension               = 0x00,
         // Extension that is behind the draft extensions runtime flag:
         DraftExtension                  = 0x01,
-        // Extension that is still in draft state, but has been selectively enabled by default under a prefix. Do not use
-        // this for enabling new draft extensions; use the DraftExtension flag instead, and do not use vendor prefixes:
-        EnabledDraftExtension           = 0x04,
     };
 
     class ExtensionTracker {
     public:
         ExtensionTracker(ExtensionFlags flags, const char* const* prefixes)
             : m_draft(flags & DraftExtension)
             , m_prefixes(prefixes)
         {
         }
 
@@ skipping 347 matching lines @@
     // If the vector is empty, return the maximum allowed active context number.
     static size_t oldestContextIndex();
     static IntSize oldestContextSize();
 };
 
 DEFINE_TYPE_CASTS(WebGLRenderingContextBase, CanvasRenderingContext, context, context->is3d(), context.is3d());
 
 } // namespace WebCore
 
 #endif // WebGLRenderingContextBase_h