Implement WEBGL_shared_resources

Source/core/html/canvas/WebGLFramebuffer.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 63 matching lines @@
     GC3Denum getColorBufferFormat() const;
     GC3Dsizei getColorBufferWidth() const;
     GC3Dsizei getColorBufferHeight() const;
 
     // This should always be called before drawArray, drawElements, clear,
     // readPixels, copyTexImage2D, copyTexSubImage2D if this framebuffer is
     // currently bound.
     // Return false if the framebuffer is incomplete; otherwise initialize
     // the buffers if they haven't been initialized and
     // needToInitializeAttachments is true.
-    bool onAccess(GraphicsContext3D*, const char** reason);
+    bool onAccess(WebGLRenderingContext*, WebGLSharedObject::AcquireMode, const char**);
 
     // Software version of glCheckFramebufferStatus(), except that when
     // FRAMEBUFFER_COMPLETE is returned, it is still possible for
     // glCheckFramebufferStatus() to return FRAMEBUFFER_UNSUPPORTED,
     // depending on hardware implementation.
-    GC3Denum checkStatus(const char** reason) const;
+    GC3Denum checkStatus(WebGLRenderingContext*, WebGLSharedObject::AcquireMode, const char**) const;
 
     bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; }
 
     void setHasEverBeenBound() { m_hasEverBeenBound = true; }
 
     bool hasStencilBuffer() const;
 
     // Wrapper for drawBuffersEXT/drawBuffersARB to work around a driver bug.
     void drawBuffers(const Vector<GC3Denum>& bufs);
 
@@ skipping 24 matching lines @@
 
     bool m_hasEverBeenBound;
 
     Vector<GC3Denum> m_drawBuffers;
     Vector<GC3Denum> m_filteredDrawBuffers;
 };
 
 } // namespace WebCore
 
 #endif // WebGLFramebuffer_h