• Auto merge of #26 - emilio:webgl-limits, r=glennw

    Webgl limits
    
    Return the GLLimits structure from the `RequestWebGLContext` API message.
    
    This allows us to keep a lot of calls that would require validation here asynchronous.
    
    See servo/servo#10224
    
    r? @glennw
    bors-servo committed Mar 28, 2016