am c4445abb: Merge "Bump refcount of canvas created for Picture" into lmp-dev

    mWidth = width;

    mHeight = height;

    SkCanvas* canvas = mRecorder->beginRecording(width, height, NULL, 0);

    // the java side will wrap this guy in a Canvas.java, which will call

    // unref in its finalizer, so we have to ref it here, so that both that

    // Canvas.java and our picture can both be owners

    canvas->ref();

    return Canvas::create_canvas(canvas);

}