isSharedObject    100 Source/core/html/canvas/WebGLFramebuffer.cpp     bool WebGLRenderbufferAttachment::isSharedObject(WebGLSharedObject* object) const
isSharedObject    198 Source/core/html/canvas/WebGLFramebuffer.cpp     bool WebGLTextureAttachment::isSharedObject(WebGLSharedObject* object) const